function openWindow(mypage,myname,w,h,scroll)
{
	var winl = (screen.width-w)/2;
  	var wint = (screen.height-h)/2;
  	var settings  ='height='+h+',';
      	settings +='width='+w+',';
      	settings +='top='+wint+',';
      	settings +='left='+winl+',';
      	settings +='scrollbars='+scroll+',';
      	settings +='resizable=no';
  	win=window.open("",myname,settings);
  	win.location.href = mypage;
  	if(parseInt(navigator.appVersion) >= 4){win.window.focus();
	}
}