Mozilla / Javascript problem(s)... :(

can someone please tell me why my gallery code doesn't work in Mozilla ? (it works fine in IE6)
When I click on an image in Mozilla, nothing happens...i don't even get a lousy error.

this is the gallery: http://tcorp.de/site4/?page=gallery.html&music=off


code on page to call an image
[CODE][b][a HREF="#" onmousedown=loadimage('7') class="categorypics"] ---thumbnail image here--- [/a][/b][/CODE] (a simple "link" to "#" there the "onmousedown" does the actual action)


code in js file for "loadimage"
[CODE]
function loadimage(im,op)
{
if (checkb.checked ){
if (!op=="1"){window.open('dgal.html?picnum='+im+'&nw=yes','nwin','width=800,height=440,resizable=yes,scrollbars=yes,status=no,left=10');}else
{window.open('dgal.html?picnum='+im+'&nw=yes','nwin','width=580,height=680,resizable=yes,scrollbars=yes,status=no,top=20');}
}
else{
window.location.href ='dgal.html?picnum='+im;
}
}
// the "op" param is optional
[/CODE] (if checkbox on page is checked, page that shows image is opened in new window...if not, page that shows image is opened in same window. The "op" param is to choose a window size format)

Maybe it's because Mozilla only lives by the W3C standards, whilst IE is compatible with all kinds of weird coding. Try checking your code...

BTW, I'm just guessing (dunno crap ;) :D )

I got it to work by adding an ID to the checkbox and using getElementById to point to the object.
Apparently Mozilla doesn't like objects that aren't "defined".