I'm using jQuery UI Themes with one of my web applications.
If I want to apply button styling, I add the following jquery code:
$(".button").button();
Where .button is a class on the button I wish to style with jquery themes.

How can I do a similar thing to apply theme styles to an element which I want to style as a "highlight"?

I tried .highlight();, but this hasn't worked.
Note: I'm aware that I can manually add the CSS classes to my elements, but I wish to apply this with jQuery as this would save me adding the span element which displays the icon.
Therefore I want to be able to have the following HTML code:
<div class="highlight">
<strong>Warning!</strong> Lorem Ipsum
</div>
Which is then converted, using jQuery, into:
<div class="highlight ui-state-highlight ui-corner-all" style="margin-bottom:20px">
<p><span class="ui-icon ui-icon-info" style="float: left; margin-right: .3em;"></span>
<strong>Warning!</strong> Lorem Ipsum</p>
</div>
Or, have I misunderstood what the use of the "Highlight" example is on the Theme roller page? I've assumed this is a warning box, considering its next to an error example.
http://jsfiddle.net/mTu2R/3/