js 动态添加元素

该例子的样式用的是easyui的样式，看不懂只需把class="easyui-XXX" 删除即可
<div class="fitem" id="urls" style="margin-bottom:5px;">
    <label>url:</label>
    <input id="url" name="url" class="easyui-textbox" style="width: 260px" >
    小标题:
    <input id="url_title" name="url_title" class="easyui-textbox" style="width: 260px;" >
    <a href="javascript:void(0);"class="easyui-linkbutton" iconCls="icon-add" οnclick="addinput()"></a>
    <div class="fitem"></div>
</div>

function addinput(){
    var temp = document.createElement('div');
    temp.className="fitem";
    var urls = document.getElementById("urls");
    urls.appendChild(temp);
    var url_to  = document.createElement("input");
    url_to.type ="text";
    url_to.id   ="url";
    url_to.style.width="260px";
    url_to.style.borderRadius="5px";
    url_to.style.border="1px";
    url_to.style.borderColor="#95b8e7";
    url_to.style.borderStyle="solid";
    url_to.style.height="22px";
    var title_to  = document.createElement("input");
    title_to.type ="text";
    title_to.id   ="url_title";
    title_to.style.width="260px";
    title_to.style.borderRadius="5px";
    title_to.style.border="1px";
    title_to.style.borderColor="#95b8e7";
    title_to.style.borderStyle="solid";
    title_to.style.height="22px";
    url_to.style.marginLeft="65px";
    title_to.style.marginLeft="49px";
    temp.appendChild(url_to);
    temp.appendChild(title_to);
}