add:  if (transport==null&&wicketAjaxDebugEnabled()) { var log=WicketAjaxDebug.logError; log("Could not locate ajax transport. Your browser does not support the required XMLHttpRequest object or wicket could not gain access to it."); } 
context: function wicketAjaxGetTransport() {    var transport = null;    if (window.XMLHttpRequest) {        transport = new XMLHttpRequest();    } else {        if (window.ActiveXObject) {            transport = new ActiveXObject("Microsoft.XMLHTTP");        }    }    return transport;}
meta: 1204	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1204/26ce723b2b27d49c1a5e09bda0ed21a2d61f418d/wicket-ajax.js/clean/wicket/src/java/wicket/ajax/wicket-ajax.js