function popup(mypage, 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(mypage,'popUp',settings);
	if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}