IE Developer Toolbar Beta 3

There is a new version of the IE Developer Toolbar from Microsoft!

<blockquote>“This Beta 3 version of the toolbar contains functionality and stability enhancements over previous versions, including:
<ul>
<li>Style Tracer: Right mouse click on a style value for an element and select Style Tracer to find the style rule that is effecting that value.</li>
<li>CSS Selector Matches: View a report of all style rules set and how many times they are used on the current page.</li>
<li>View Source: View the formatted and syntax colored source of the original page, currently rendered page, element or element with the styles that are effecting it.”</li>
</ul>
</blockquote>To view some screenshots of these new features check out the Microsoft IE Blog.