It's suggested to have a look at the trial version of DOMinator Pro 2012
This project hosts the DOMinator for Firefox.
DOMinator is a Firefox based software for analysis and identification of DOM Cross Site Scripting issues using dynamic runtime tainting model on strings.
Warning: Do not use it on vanilla Firefox. It won't work! Use only on the DOMinator for Firefox version.
Before downloading anything be sure to read the instructions
The DOMinator Project is sponsored by: