Jquery child elements
<p>When I add event handler to a some elements using query:</p>

<pre><code>$('div').mouseover(function () {

                                    });
</code></pre>

<p>Iinside function I have an element for which we add event function ($(this)).
how can I check inside this function next:</p>

<ol>
<li>Have this "DIV"($(this)) child elements
"DIV"?  </li>
<li>Have this "DIV"($(this)) child
    element "DIV" whith height more than
    300?</li>
</ol>
