Insertion.Top takes two parameters, the content to be inserted and the id of the element to which this content will be appended. Insertion.Top inserts text (or a HTML snipet) as a first child of element.
new Insertion.Top(element, content);
element can be any DOM Element object or ID.
content can be either text or HTML snipet.
<p>
<a href="#" onclick="new Insertion.Top('mylist', '<li>Yet another list item!</li>'); return false;">
Add another list item!
</a>
</p>
<ul id="mylist">
<li>a list item.</li>
<li>another list item.</li>
</ul>
creates:
Add another list item!