function doZoom(what,w,h,root) {
	var scroll=0;
	if (w>screen.width) { w=screen.width; scroll=1; }
	if (h>screen.height) { h=screen.height; scroll=1; }

	var left = (screen.width/2) - w/2;
 	var top = (screen.height/2) - h/2;

	var opt='toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars='+scroll+',height='+h+',width='+w+',top='+top+',left='+left;
	
	var title =$("img[@src*="+what+"]").parent().attr('title');


	var wnd= window.open(root+'zoom.php?name='+what+'&title='+title,'',opt);
	
	wnd.focus();
}