add: if (!results) return; 
context:   function move(index) {    items = $("li", results);    items.removeClass("selected");    $(items[index]).addClass("selected");    selectedIndex = index;  }
meta: 2557	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2557/ec175125151132e27d1156f40f74eacc8c511014/suggest.js/clean/htdocs/js/suggest.js