function open_preview(img)
{
    window.open ("/preview.php?it=1&img="+img, "preview_popup", "menubar=0,scrollbars=1,resizable=0,width=750,height=550"); 
}
function open_previewc(img)
{
    window.open ("/preview.php?it=3&img="+img, "preview_popup", "menubar=0,scrollbars=1,resizable=0,width=750,height=550"); 
}

function preview_img(img)
{
    window.open ("/preview.php?it=2&img="+img, "preview_popup", "menubar=0,scrollbars=1,resizable=0,width=750,height=550"); 
}

function simplePreload() { 
	var args = simplePreload.arguments;
	document.imageArray = new Array(args.length);
	for(var i=0; i<args.length; i++)
	{
    	document.imageArray[i] = new Image;
 		document.imageArray[i].src = args[i];
	}
}

function catImgChange(img, id) {
	if(document.getElementById(id))
	{
		document.getElementById(id).src = img;
	}	
}