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