function prod_info(url,wid,hei)
{
wid = wid + 20;
hei = hei + 30;
   window.open(url,'compare','resizable=yes,width='+wid+',height='+hei+',toolbar=no,scrollbars=no,location=no,directories=no,status=no,menubar=no,top=no,left=no,help=no');
}