get collection of elements
<p>how to get a collection of elements?</p>

<pre><code>var tst = this.tbl_list.find('col');
alert('length = '+tst.length);
for(var key in tst){
    alert(tst[key][0].tagName);
}
</code></pre>

<p>this alerts <code>length = 7</code> (which is the correct count), but each element is <code>undefined</code>!?</p>
