var winPopped=null;
function popIt(strURL, strName, strWidth, strHeight)
{
         strWidth = (!strWidth)?250:strWidth;
         strHeight = (!strHeight)?250:strHeight;
         if (!winPopped)
          winPopped = window.open(strURL, strName, "resizable=1,width="+strWidth+",height="+strHeight+",")
         else if (winPopped.closed)
         {
           winPopped = window.open(strURL, strName, "resizable=1,width="+strWidth+",height="+strHeight+",")
         }
         else
         {
             winPopped.focus();
             winPopped.location=strURL;
         }
}