var win= null;

function nw(mypage,myname,w,h,scroll){

 var winl = (screen.width-w)/2;
 var wint = (screen.height-h)/2;
 win=window.open(mypage,myname,'top='+wint+',left='+winl+',toolbar=0,location=0,directories=0,statusbar=0,menubar=0,scrollbars=1,resizable=1,width='+w+',height='+h);

 if(parseInt(navigator.appVersion) >= 4){
  win.window.focus();
 }

}//nw