@KevinH: Perhaps you should add a note that this plugin can destroy your styles, since there is no way to robustly convert an inline style to a class based style. The CSS selector specificity will always be wrong. For example
Code:
#test {
color: red
}
<span id="test" style="color:green">test</test>
will render green before this plugin runs and red after it runs.
This is because in the CSS cascading spec the specificity of an inline style declaration is always higher than the specificity of any selector based rule.