function openWindow(url, name, width, height, scroll)
{ 
	posx = (screen.width - width) / 2;
	posy = (screen.height - height) / 2;
	navegador = window.open( url, name, "fullscreen=0, toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=1, resizable=0, width="+width+", height="+height+", top="+posy+", left="+posx ); 
}