function MM_openBrWindow(theURL,winName,features,l,h) { //v2.0

 features=features + ",width="+l+",height="+h;
 if (screen.height) {
  var top = (screen.height-h)/2; 
  var left=(screen.width-l)/2;
  features=features+",top="+top+",left="+left;
 }
 window.open(theURL,winName,features );
}