var newWin = null;
function popUp(strURL, strType, strHeight, strWidth) {
 if (newWin != null && !newWin.closed)
   newWin.close();
 var strOptions="";
 if (strType=="console")
   strOptions="resizable,height="+
     strHeight+",width="+strWidth;
 if (strType=="fixed")
   strOptions="status,height="+
     strHeight+",width="+strWidth;
 if (strType=="elastic")
 {
   strHeight = Screen.availHeight;
   strWidth = Screen.availWidth;   
   strOptions="toolbar,menubar,scrollbars,"+
     "resizable,location,height"+
     strHeight+",width="+strWidth;
 }
 newWin = window.open(strURL, 'newWin', strOptions);
 newWin.focus();
}