add: selected=-1; 
context: 	function updateChoices(){		    var transport = wicketAjaxGetTransport();	    if (transport == null)return false    	transport.onreadystatechange = function () {			if (transport.readyState == 4) {				if (transport.status == 200) {					doUpdateChoices(transport.responseText);		        } else {        	    	if (wicketAjaxDebugEnabled()) {	             	   var log=WicketAjaxDebug.logError;    	            	log("received ajax response with code: "+transport.status);   	            	}        	    }	        }            		    };	    	    var value=wicketGet(elementId).value;	    transport.open("GET",callbackUrl+"&q="+value,true);    	transport.send(null);	}
meta: 1204	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1204/a161906cbf946792f064c8d76dac401cb95db7d9/wicket-autocomplete.js/clean/wicket-extensions/src/java/wicket/extensions/ajax/markup/html/autocomplete/wicket-autocomplete.js