链接触发click事件

    <script language="javascript">  
        function test2(name)  
        {  
            if(document.all)  
            {  
                document.getElementById(name).click();  
            }  
            else  
            {  
                var evt = document.createEvent("MouseEvents");  
                evt.initEvent("click", true, true);  
                document.getElementById(name).dispatchEvent(evt);  
            }  
        }  
    </script>  
      
    <a href="#" id="a3" onclick="location.href = 'http://www.baidu.com';">baidu</a>  
    <input type="button" value="clck" onclick="test2('a3');"/>