SplineTech JavaScript Debugger PRO is an award-winning javascript
debugging tool that enables you to easily edit and debug JavaScript and
VBScript inside HTML pages. Client-Side JavaScript, JScript and
VBScript debugging languages are fully supported for simple and complex
HTML and DHTML debugging scenarios.Now Featuring dockable floating
windows, and an intagrated interactive step by step javascript
debugging guide. Latest feature added - Local variable Watch tree.
http://www.javascript-debugger.com/ 