Is it possible to have an in-browser debugger?
<p>Is it presently possible to programatically debug Javascript from within a browser window? I wish to be able to breakpoint/inspect Javascript from an in-browser window panel.</p>

<p>EDIT:</p>

<p>I should have been more specific: I'm loogking for an api to be used from within the page context, i.e. JS code in browser can add it's own breakpoints.</p>
