一款经过JS+CSS美化的下拉列表框_表单按钮特效

一款经过JS+CSS美化的下拉列表，效果很不错，但代码有点偏多，学习CSS的朋友可以学习一下方法，然后自己变通一下，把代码简化一下。

<!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" mrc="text/html; charset=gb2312" />
<title>JS+CSS下拉列表</title>

.center{ margin-left:auto; margin-right:auto; margin-top:200px; width:300px;}
#age_sel_2 div.tag_select{display:block;color:#000;width:62px;height:22px;background:transparent url("/jscss/demoimg/200902/select.gif") no-repeat 0 0;padding:0 10px;line-height:22px;}
#age_sel_2 div.tag_select_hover{display:block;color:#000;width:62px;height:22px;background:transparent url("/jscss/demoimg/200902/select.gif") no-repeat 0 -22px;padding:0 10px;line-height:22px;}
#age_sel_2 div.tag_select_open{display:block;color:#000;width:62px;height:22px;background:transparent url("/jscss/demoimg/200902/select.gif") no-repeat 0 -44px;padding:0 10px;line-height:22px;}
#age_sel_2 ul.tag_options{position:absolute;margin:0;list-style:none;background:transparent url("/jscss/demoimg/200902/select.gif") no-repeat left bottom;padding:0 0 1px;margin:0;width:60px;}
#age_sel_2 ul.tag_options li{background:transparent url("/jscss/demoimg/200902/select.gif") repeat-y -102px 0;display:block;width:61px;padding:0 10px;height:22px;text-decoration:none;line-height:22px;color:#000;}
#age_sel_2 ul.tag_options li.open_hover{background:transparent url("/jscss/demoimg/200902/select.gif") no-repeat 0 -88px;color:#000}
#age_sel_2 ul.tag_options li.open_selected{background:transparent url("/jscss/demoimg/200902/select.gif") no-repeat 0 -66px;color:#19555F}
</style>
<script>
var selects = document.getElementsByTagName('select');
var isIE = (document.all && window.ActiveXObject && !window.opera) ? true : false;
function $(id) {
 return document.getElementById(id);
}
function stopBubbling (ev) { 
 ev.stopPropagation();
}
function rSelects() {
 for (i=0;i<selects.length;i++){
  selects[i].style.display = 'none';
  select_tag = document.createElement('div');
   select_tag.id = 'select_' + selects[i].name;
   select_tag.className = 'select_box';
  selects[i].parentNode.insertBefore(select_tag,selects[i]);
  select_info = document.createElement('div'); 
   select_info.id = 'select_info_' + selects[i].name;
   select_info.className='tag_select';
   select_info.style.cursor='pointer';
  select_tag.appendChild(select_info);
  select_ul = document.createElement('ul'); 
   select_ul.id = 'options_' + selects[i].name;
   select_ul.className = 'tag_options';
   select_ul.style.position='absolute';
   select_ul.style.display='none';
   select_ul.style.zIndex='999';
  select_tag.appendChild(select_ul);
  rOptions(i,selects[i].name);
  
  mouseSelects(selects[i].name);
  if (isIE){
   selects[i].onclick = new Function("clickLabels3('"+selects[i].name+"');window.event.cancelBubble = true;");
  }
  else if(!isIE){
   selects[i].onclick = new Function("clickLabels3('"+selects[i].name+"')");
   selects[i].addEventListener("click", stopBubbling, false);
  }  
 }
}

所属频道：表单按钮特效/更新时间：2013-01-06

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