//-----------------------------------------------------------------------------------------------

function ventana(url,nombre,ancho,alto,scroll) {
newWindow = window.open(url,nombre,'resizable=yes,menubar=no,location=no,toolbar=no,status=no,scrollbars='+scroll+',directories=no,width='+ancho+',height='+alto+',left='+(screen.availWidth-ancho)/2+',top='+(screen.availHeight-alto)/2);
}


//------------------------------------------------------------------