function zoom(pic, width, height)
{	
	var link = "popup.php?pic=" + pic + "&width=" + width + "&height=" + height;
	
	if (navigator.appName == 'Microsoft Internet Explorer')
	{
		popup(link, 'screenshot', width, height);
	}
	else
	{
		popupName = pic.replace(/\.|\-/g, "");
		popup(link, popupName, width, height);
	}
}

function popup(link, winName, width, height)
{	
	winLeft = (screen.width-width)/2;
	winTop = (screen.height-height)/2;
	window.open(link, winName, 'width='+width+',height='+height+',left='+winLeft+',top='+winTop+',toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0').focus();
}