Live DOM Viewer is a nice JavaScript tool for playing with web page DOM (Document Object Model). This JavaScript powered web page shows you four boxes: HTML source editing box, document DOM view, rendered document view and log. The scrip comes with very simple example data, for better testing you can paste your HTML code in or use the code included in more complicated example. I have tested that this page works well in Firefox and Chrome browsers, and it also work with IE (DOM view does not look as good on IE). You can run this web page on the server or it work well from a local file (so you can save the web page on your PC and use it as tool when you need it).
