Mozilla DOM Inspector

"is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM hierarchy can be navigated using a two-paned window that allows for a variety of different views on the document and all nodes within." I saw mention made of this, the other day, and installed a fresh copy this morning. Despite the fact that this is obviously not of beta yet -- make sure you've finished or saved any important data, Mozilla will probably bail at some point -- I think it is a very good thing. It will make for an excellent learning and debugging tool. At the very least, it takes the indecipherable mish-mash that is a person's JavaScript and CSS code and makes it half-way legible. And, there's a handy-dandy sidebar widget! via scottandrew

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