var win=null;

  function NewWindow(mypage,myname,w,h,scroll,pos) {

   if(pos=="random") {
      LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;
      TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
   }
   if(pos=="center") {
      LeftPosition=(screen.width)?(screen.width-w)/2:100;
      TopPosition=(screen.height)?(screen.height-h)/2:100;
   }
   else if((pos!="center" && pos!="random") || pos==null) { LeftPosition=0; TopPosition=20 }
  settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
   win=window.open(mypage,myname,settings);}