// JavaScript Document

function nuevoAjax()
{ 
	if (window.XMLHttpRequest)
    {
        // If is Mozilla, Safari etc
        pagina_requerida = new XMLHttpRequest ();

    } else if (window.ActiveXObject)
    {
        // but if is IE
        try 
        {
            pagina_requerida = new ActiveXObject ("Msxml2.XMLHTTP");
        }
        catch (e)
        {
            // Old version
           try
            {
                pagina_requerida = new ActiveXObject ("Microsoft.XMLHTTP");
            }
           catch (e)
            {
            }
        }
    } 
    else
    	return false;
	return pagina_requerida;
}