function setPDF(pdf)
    {
        var ajax_obj = null;
        var logger = '../twatch/jslogger.html';
        var ref = '?ref=' + escape(window.location);
        var pg = '&pg=' + pdf;

        if (window.XMLHttpRequest)
        {
            ajax_obj = new XMLHttpRequest();
        }
        else if (window.ActiveXObject)
        {
            ajax_obj = new ActiveXObject("Microsoft.XMLHTTP");
        }
        if (ajax_obj != null)
        {
            ajax_obj.open("GET", logger + ref + pg);
		 	ajax_obj.send(null);
		}
    }