<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>下拉框</title><style>* { margin: 0; padding: 0;} body { padding: 50px 50px;} .btn-select { position: relative; display: inline-block; width: 150px; height: 25px; background-color: #f80; font: 14px/20px "Microsoft YaHei"; color: #fff;} .btn-select .cur-select { position: absolute; display: block; width: 150px; height: 25px; line-height: 25px; background: #f80 url(ico-arrow.png) no-repeat 125px center; text-indent: 10px;} .btn-select:hover .cur-select { background-color: #f90;} .btn-select select { position: absolute; top: 0; left: 0; width: 150px; height: 25px; opacity: 0; filter: alpha(opacity: 0;); font: 14px/20px "Microsoft YaHei"; color: #f80;} .btn-select select option { text-indent: 10px;} .btn-select select option:hover { background-color: #f80; color: #fff;}</style></head>
<body><form><a class="btn-select" id="btn_select"> <span class="cur-select">请选择</span> <select> <option>选项一</option> <option>选项二</option> <option>选项三</option> <option>选项四</option> <option>选项五</option> </select></a></form>
<script>var $$ = function (id) { return document.getElementById(id);}window.onload = function () { var btnSelect = $$("btn_select"); var curSelect = btnSelect.getElementsByTagName("span")[0]; var oSelect = btnSelect.getElementsByTagName("select")[0]; var aOption = btnSelect.getElementsByTagName("option"); oSelect.onchange = function () { var text=oSelect.options[oSelect.selectedIndex].text; curSelect.innerHTML = text; }}</script></body></html>
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