function popup(file,w,h)
{
	if (arguments.length <= 3) {l='50'} else {l=arguments[3]};
	if (arguments.length <= 4) {t='10'} else {t=arguments[4]};
	//alert(arguments[3]+' '+arguments[4]);
	window.open("big/"+file+".htm",file,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width='+w+',height='+h+',left='+l+',top='+t);
}
function hide_dots(img) //keeps dotted lines from remaining onscreen after clicking a link.
{
	if (navigator.appName == 'Microsoft Internet Explorer') img.blur()
}