<script type="text/javascript">
    function ch(){
        var get = $(".bb");
        var strIds = [];
        for (i = 0 ; i < get.length; i++) {
            if (get[i].checked) {
                strIds.push(get[i].value);
            }
        }
        if (strIds.length > 0) {
            alert(strIds);
        }
        else {
            alert("123456789");
        }
    }
</script>


<div class="tools">
	    	<ul class="toolbar">
		        <li onclick="ch()"><span></span>刪除</li>
	        </ul>
	    </div>
	    <table class="tablelist">
	    	<thead>
		    	<tr>
			        <th style="width: 52px;"><input type="checkbox"/></th>
			        <th>編號<i class="sort"></i></th>
			        <th>館藏型別</th>
		        </tr>
		    </thead>
		    <tbody>
		    	
			        <tr>
				        <td><input type="checkbox" class="bb" value="1"/></td>
				        <td>1</td>
				        <td>書籍</td>
			        </tr> 
                     <tr>
				        <td><input type="checkbox" class="bb" value="2"/></td>
				        <td>2</td>
				        <td>書籍</td>
			        </tr> 
		       
	        </tbody>
	    </table>