function MM_openBrWindow(theURL,winName,features, myWidth, myHeight, isCenter) { //v3.0
 if(window.screen)if(isCenter)if(isCenter=="true"){
  var myLeft = (screen.width-myWidth)/2;
  var myTop = (screen.height-myHeight)/2;
  features+=(features!='')?',':'';
  features+=',left='+myLeft+',top='+myTop;
  var aw = screen.availWidth;
  var ah = screen.availHeight;
 }
 poplog = window.open(theURL,winName,features+((features!='')?',':'')+'width='+myWidth+',height='+myHeight);
 poplog.focus();
}