function abrirPrivacidad()
{
posx=((screen.availWidth-450)/2)
posy=((screen.availHeight-350)/2)
eval("boxwindow=window.open('privacidad.html','boxwindow','width=450,height=350,toolbar=0,directories=0,status=0,scrollbars=0,resize=0,menubar=0,screenx="+posx+",screeny="+posy+",left="+posx+",top="+posy+"')")
}