jauery的Validation插件鼠标移开触发校验怎么使用

以前用的是prototype的validation插件，现在改用jquery,在使用Jquery的Validation插件的时候，发现只能点击submit按钮才触发校验。
我想实现那种，鼠标在forum表单的input移开之后触发校验试了很久都没成功，请问大家是怎么用的？
    $("#commentForm").validate({
                 /**//* 设置验证触发事件 */  
                  onclick: true,
                    onfocusout: true,  
                    onkeyup: true
        });
看了API，这样设置并没起作用。


<form class="cmxform" id="commentForm" method="get" action="">
    <fieldset>
        <legend>Please provide your name, email address (won't be published) and a comment</legend>
        <p>
            <label for="cname">Name (required, at least 2 characters)</label>
            <input id="cname" name="name" class="required" minlength="2" />
        <p>
            <label for="cemail">E-Mail (required)</label>
            <input id="cemail" name="email" class="required email" />
        </p>
        <p>
            <label for="curl">URL (optional)</label>
            <input id="curl" name="url" class="url" value="" />
        </p>
        <p>
            <label for="ccomment">Your comment (required)</label>
            <textarea id="ccomment" name="comment" class="required"></textarea>
        </p>
        <p>
            <input class="submit" type="submit" value="Submit"/>
        </p>
    </fieldset>
</form>

用 blur 这个属性  具体的 自己写写看吧