function popUp(url,nWidth,nHeight,sResize, sMenu, sWindowName) {

   if (sWindowName == "") {
       sWindowName = "popupwin";
   }

   if (nWidth == "tight") {
       nWidth=440;
       nHeight=460;
       sResize="no";
       sMenu="no";

   } else if (nWidth == "giftcertificate") {
       nWidth=476;
       nHeight=362;
       sResize="yes";
       sMenu="no";

   } else {
       if (nHeight == "") {
           nHeight=400;          }
       if (nWidth == "") {
           nWidth=553;          }
       if (sResize == "" || sResize == "no") {
           sResize = "no";          }
       if (sMenu == "" || sMenu == "no") {
           sMenu = "no";          }
   }              window.open(url,sWindowName,'toolbar='+sMenu+',location='+sMenu+',directories=no,status='+sMenu+',menubar='+sMenu+',scrollbars='+sResize+',resizable='+sResize+',copyhistory=no,width='+nWidth+',height='+nHeight);

}