function ExtLink(url) {
  newWin = window.open("/jscfeatures/extlink.html?" + url,"NewWin","height=250,width=425,location=0,menubar=0,scrollbars=0,status=0,toolbar=0,resizable=1");
  if (document.all || document.layers) { 
     xPos = Math.round ( (screen.availWidth - 425) / 2 );
     yPos = Math.round ( (screen.availHeight - 250) / 2 );
     newWin.moveTo(xPos,yPos);
 }	
}