function selectWin(source,h1,w1){
 var winl = (screen.width - w1) / 2;
 var wint = (screen.height - h1) / 2;
 newWin = window.open(source,'','height=' + h1 + ',scrollbars=0,resizable=0,width=' + w1 + ',top = ' + wint + ', left = ' + winl);
}