var windows=new Array();

windows['image']=new Array();
windows['image']['scroll']=true;
windows['image']['url']='pop_image.aspx';

function popWin(name,url) {
	if (typeof windows[name]=="object") {
		var url=((url) ? url : windows[name]['url']);
		var scroll=windows[name]['scroll'];
		
		opts="toolbar=0,location=0,directories=0,status=0,menubar=0,copyhistory=0,scrollbars="+( (scroll) ? 1 : 0 )+",resize=0,width=500,height=500,left=50,top=0";

		if (typeof document.a == "object" && (!document.a.closed)) {
			document.a.close();
			document.a=false;
			document.b=window.open(url,name,opts);
		} else if (typeof document.b == "object" && (!document.b.closed)) {
			document.b.close();
			document.b=false;
			document.a=window.open(url,name,opts);
		} else {
			document.a=window.open(url,name,opts);
		}
	}
}