<table>
    <tbody id="div_add_del" name="div_add_del">
        <tr style="display:none">         
            <td width="80">
                <input type="text" id="add_itempic[]" name="add[startpicurl][]" value="" class="px" style="width:190px;">
                <br>
                <a href="###" onclick="PicUpload('add_itempic[]',700,400)" class="a_upload">上传</a>             
            </td>
        </tr>
    </tbody>

    <tbody>
        <tr>
            <td colspan="4" class="norightborder">
                
                    <button type="button" id="vtype" onclick="addrow('div_add_del');" class="btnGrayS vm" value="true"> <strong>添加选项</strong>
                    </button>
                    至少2项,最多15项,已经添加[
                    <span id='aditem'></span>
                    ]项
                </td> 
        </tr>
    </tbody>
</table>

<script>
    var count = 1;
    function addrow(tbody) {
        var add = false;
        var newnode;
        if($$(tbody).rows.length == 1 && $$(tbody).rows[0].style.display == 'none') {
        $$(tbody).rows[0].style.display = '';
        newnode = $$(tbody).rows[0];
    } else {
        newnode = $$(tbody).rows[0].cloneNode(true);
        add = true;
    }
    if(add) {
        $$(tbody).appendChild(newnode);
    }
    var aditem = document.getElementById('aditem');
    aditem.innerHTML=count;
    if(count==15)
    {
        var vtype = document.getElementById('vtype');
        vtype.disabled="disabled";vtype.value="disabled";}count++;
    }
    function delrow(obj, tbody) {
        if($$(tbody).rows.length == 1) {
            var trobj = obj.parentNode.parentNode;
            trobj.style.display='none';
        }else{
            $$(tbody).removeChild(obj.parentNode.parentNode);
        }
    }
</script>

<input type="text" id="add_itempic[]" name="add[startpicurl][]" value="" class="px" style="width:190px;">