扩展Jquery Auto complete插件
JS代码：
.ac_conteiner {border: 1px solid #abadb3;height: 20px;}.ac_input {text-indent:2px;font-size:1em;font-family:sans-serif;float: left;padding:1px;border: 0 !important;height: 16px;margin: 1px;}.ac_img {width: 18px;background: url('/Scripts/jqueryui/autocomplete/down.png');height: 20px;float:right;cursor: pointer;}.ac_results {border: 1px solid gray;background-color: white;padding: 0;margin: 0;list-style: none;position: absolute;z-index: 10000;display: none;overflow-x: hidden;overflow-y: auto;height: 100px;margin-left: -1px !important; /*all*/_margin-left:-3px !important; /*ie8*/_margin-left:-1px; /*ie6*/_margin-top: -1px !important; /*ieX*/}.ac_results div {font-size:1em;font-family:sans-serif;padding-left: 2px;white-space: nowrap;}.ac_over {cursor: pointer;background-color: #3399ff;color: #fff;}.ac_match {text-decoration: underline;color: inherit;margin: 0;padding: 0;}html:first-child .ac_results {/* opera <9.5 does not support css3 property overflow-y */overflow: auto;}用法参考：http://mabp.kiev.ua/content/2008/04/08/autocomplete/