function openCast(linkLocation, target) {
         var wi = 450;
         var he = 510; 
         var leftPos=(screen.availWidth/2)-(wi/2);
         var topPos=(screen.availHeight/2)-(he/2)-20;
         if (linkLocation=="NULL") {linkLocation==''}
         NewWin = this.open(linkLocation, target, 'left=' + leftPos + ',top=' + topPos + ',location=no,toolbar=no,directories=no,menubar=no,scrollbars=no,resizable=no,width=' + wi + ',height=' + he);
         NewWin.focus();
         }