var pics=new Array();
var count=0;
var ith=0;
var hr="24";
var hr1="36";
var vr="20051026";
var current=0;
var clicked=100;
var picvr;
var picnam;
var picgfs;

function get_time(frm){
  if(frm.elements["fcst"].selectedIndex == 0){
     hr="24";
     vr="20051026";
  }
  if(frm.elements["fcst"].selectedIndex == 1){
     hr="48";
     vr="20051027"
  }
  if(frm.elements["fcst"].selectedIndex == 2){
     hr="72";
     vr="20051028"
  }

}



function preload(img,i){
     pics[i] = new Image();
     pics[i].src = img;
}

function preload_vr(img){
     picvr = new Image();
     picvr.src = img;
}

function preload_nam(img){
     picnam = new Image();
     picnam.src = img;
}
 
function preload_gfs(img){
     picgfs = new Image();
     picgfs.src = img;
}
   

function show(i){
  ith=i;
  document.my_image.src=pics[ith].src;
}

function show_vr(){
  document.vr_image.src=picvr.src;
}
 
function show_nam(){
  document.nam_image.src=picnam.src;
}

function show_gfs(){
  document.gfs_image.src=picgfs.src;
}
 

function OnChange(fcst) {       //fcst is dummy
    load_image(current);
    show(current);
    show_vr();
    show_nam();
    show_gfs();
}

function set_all(){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';
}  

function check_img(n){
    if(n==0){
      document.checked_img0.src='checked.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==1){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='checked.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==2){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='checked.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==3){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='checked.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==4){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='checked.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==5){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='checked.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==6){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='checked.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==7){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='checked.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==8){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='checked.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==9){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='checked.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==10){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='checked.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==11){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='checked.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';

    }
    if(n==12){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='checked.gif';
      document.checked_img13.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img24.src='white.gif';
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      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='checked.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';
    }
    if(n==28){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='checked.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';
    }
    if(n==29){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='checked.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';
    }
    if(n==30){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='checked.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';
    }
    if(n==31){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='checked.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='white.gif';
    }
    if(n==32){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='checked.gif';
      document.checked_img33.src='white.gif';
    }
    if(n==33){
      document.checked_img0.src='white.gif';
      document.checked_img1.src='white.gif';
      document.checked_img2.src='white.gif';
      document.checked_img3.src='white.gif';
      document.checked_img4.src='white.gif';
      document.checked_img5.src='white.gif';
      document.checked_img6.src='white.gif';
      document.checked_img7.src='white.gif';
      document.checked_img8.src='white.gif';
      document.checked_img9.src='white.gif';
      document.checked_img10.src='white.gif';
      document.checked_img11.src='white.gif';
      document.checked_img12.src='white.gif';
      document.checked_img13.src='white.gif';
      document.checked_img23.src='white.gif';
      document.checked_img14.src='white.gif';
      document.checked_img16.src='white.gif';
      document.checked_img17.src='white.gif';
      document.checked_img18.src='white.gif';
      document.checked_img19.src='white.gif';
      document.checked_img20.src='white.gif';
      document.checked_img21.src='white.gif';
      document.checked_img22.src='white.gif';
      document.checked_img15.src='white.gif';
      document.checked_img24.src='white.gif';
      document.checked_img25.src='white.gif';
      document.checked_img26.src='white.gif';
      document.checked_img27.src='white.gif';
      document.checked_img28.src='white.gif';
      document.checked_img29.src='white.gif';
      document.checked_img30.src='white.gif';
      document.checked_img31.src='white.gif';
      document.checked_img32.src='white.gif';
      document.checked_img33.src='checked.gif';
    }


} 

function onLoad(){
    checked_img0 = new Image();
    checked_img1 = new Image();
    checked_img2 = new Image();
    checked_img3 = new Image();
    checked_img4 = new Image();
    checked_img5 = new Image();
    checked_img6 = new Image();
    checked_img7 = new Image();
    checked_img8 = new Image();
    checked_img9 = new Image();
    checked_img10 = new Image();
    checked_img11 = new Image();
    checked_img12 = new Image();
    checked_img13 = new Image();
    checked_img14 = new Image();
    checked_img15 = new Image();
    checked_img16 = new Image();
    checked_img17 = new Image();
    checked_img18 = new Image();
    checked_img19 = new Image();
    checked_img20 = new Image();
    checked_img21 = new Image();
    checked_img22 = new Image();
    checked_img23 = new Image();
    checked_img24 = new Image();
    checked_img25 = new Image();
    checked_img26 = new Image();
    checked_img27 = new Image();
    checked_img28 = new Image();
    checked_img29 = new Image();
    checked_img30 = new Image();
    checked_img31 = new Image();
    checked_img32 = new Image();
    checked_img33 = new Image();

    document.checked_img0.src='checked.gif';
    document.checked_img1.src='white.gif';
    document.checked_img2.src='white.gif';
    document.checked_img3.src='white.gif';
    document.checked_img4.src='white.gif';
    document.checked_img5.src='white.gif';
    document.checked_img6.src='white.gif';
    document.checked_img7.src='white.gif';
    document.checked_img8.src='white.gif';
    document.checked_img9.src='white.gif';
    document.checked_img10.src='white.gif';
    document.checked_img11.src='white.gif';
    document.checked_img12.src='white.gif';
    document.checked_img13.src='white.gif';
    document.checked_img14.src='white.gif';
    document.checked_img15.src='white.gif';
    document.checked_img16.src='white.gif';
    document.checked_img17.src='white.gif';
    document.checked_img18.src='white.gif';
    document.checked_img19.src='white.gif';
    document.checked_img20.src='white.gif';
    document.checked_img21.src='white.gif';
    document.checked_img22.src='white.gif';
    document.checked_img23.src='white.gif';
    document.checked_img24.src='white.gif';
    document.checked_img25.src='white.gif';
    document.checked_img26.src='white.gif';
    document.checked_img27.src='white.gif';
    document.checked_img28.src='white.gif';
    document.checked_img29.src='white.gif';
    document.checked_img30.src='white.gif';
    document.checked_img31.src='white.gif';
    document.checked_img32.src='white.gif';
    document.checked_img33.src='white.gif';

}