function update()
{


var opt = {

    method: 'post',

    onSuccess: function(t) {
      //  alert(t.responseText);
    },

    onFailure: function(t) {
      //  alert('Error ' + t.status + ' -- ' + t.statusText);
    }
}


new Ajax.Request('http://www.mdnationwide.co.uk/grab_xml.php', opt);


}