JS实现下拉列表效果

function TabControl(name,active)
{
 this.name = name;
 this.tabName = new Array();
 this.tabDiv = new Array();
 this.contentDiv = new Array();
 this.activeTab = active;
 return this;
}

function AddTabItem(tbCtrl,name,tabDiv,contentDiv)
{
 tbCtrl.tabName[tbCtrl.tabName.length] = name;
 tbCtrl.tabDiv[tbCtrl.tabDiv.length] = tabDiv;
 tbCtrl.contentDiv[tbCtrl.contentDiv.length] = contentDiv;
}

function SetActiveTab(tbCtrl,name)
{
 var i;
 for (i=0;i<tbCtrl.tabName.length;i++){
  if (tbCtrl.tabName[i]==name)
   break;
 }
 if (i>=tbCtrl.tabName.length)
  return false;
 document.all[tbCtrl.tabDiv[tbCtrl.activeTab]].className = "normalTab";
 document.all[tbCtrl.contentDiv[tbCtrl.activeTab]].style.display = "none";
 document.all[tbCtrl.tabDiv[i]].className = "activeTab";
 document.all[tbCtrl.contentDiv[i]].style.display = "block";
 tbCtrl.activeTab = i;
 
 return false;
}

function SetActiveVTab(tbCtrl,name)
{
 var i;
 for (i=0;i<tbCtrl.tabName.length;i++){
  if (tbCtrl.tabName[i]==name)
   break;
 }
 if (i>=tbCtrl.tabName.length)
  return false;
 document.all[tbCtrl.tabDiv[tbCtrl.activeTab]].className = "normalVTab";
 document.all[tbCtrl.contentDiv[tbCtrl.activeTab]].style.display = "none";
 document.all[tbCtrl.tabDiv[i]].className = "activeVTab";
 document.all[tbCtrl.contentDiv[i]].style.display = "block";
 tbCtrl.activeTab = i;
 
 return false;
}

实例代码下在http://files.cnblogs.com/ziyan22/js%e4%b8%8b%e6%8b%89%e5%88%97%e8%a1%a8%e6%95%88%e6%9e%9c.rar