window.event.srcElement could not work in mozilla firefox
<p>this is my code.</p>

<pre><code>function postbackOnCheck() {
    var o = window.event.srcElement;

    if (o.tagName == 'INPUT' &amp;&amp; o.type == 'checkbox' &amp;&amp; o.name != null &amp;&amp; o.name.indexOf('CheckBox') - 1) 
    {
        __doPostBack("", "");
    }
}
</code></pre>

<p>and i done few research. Found that window.event.srcElement could not use in firefox. So i change the coding into..</p>

<pre><code>function postbackOnCheck() {
    var o = window.event.srcElement || e.target;

    if (o.tagName == 'INPUT' &amp;&amp; o.type == 'checkbox' &amp;&amp; o.name != null &amp;&amp; o.name.indexOf('CheckBox') - 1) 
    {
        __doPostBack("", "");
    }
}
</code></pre>

<p>but yet still not working. hope anyone could help me.</p>
