var newWin = null;

function GenericPopup(strTarget, strWidth, strHeight) {

 if (newWin != null && !newWin.closed)
   newWin.close();
 var strOptions="";
   strOptions= "resizable,height="+
     strHeight+",width="+strWidth+",scollbars=no,statusbar=no,menubar=no,toolbar=no";
 newWin = window.open(strTarget, 'newWin', strOptions);

 newWin.focus();
}