var newWin = null;

function closeWin()
{
  if (newWin != null)
  {
    if(!newWin.closed)
      newWin.close();
  }
}

function popUp(strURL,strType,strWidth,strHeight) 
{
  closeWin();
  var strOptions="";
  if (strType=="console") strOptions="top=10,left=10,resizable,height="+strHeight+",width="+strWidth;
  if (strType=="fixed") strOptions="top=10,left=10,status,height="+strHeight+",width="+strWidth;
  if (strType=="elastic") strOptions="top=10,left=10,toolbar,menubar,scrollbars,resizable,location,height="+strHeight+",width="+strWidth;
  newWin = window.open(strURL, 'newWin', strOptions);
  newWin.focus();
}