解决IE下getElementsByName无效问题

        //解决IE下getElementsByName无效问题  
 function commonGetElementsByName(parentDom, tagName, name) {  
        var result = new Array();  
        var doms = parentDom.getElementsByTagName(tagName);  
  
        for (var i = 0; i < doms.length; i++) {  
            if (doms[i].getAttribute("name") == name) {  
                result.push(doms[i]);  
            }  
        }  
  
        return result;  
    };