DOM attribute change debugging

Question

Somehow somewhere in my code one of the elements on the page gets a style attribute which I don\'t expect it to get. Namely, it gets style=\"position:fixed\". I can see this

Answer 1

In Firebug's html inspector you can right click on a node and there is an option to interrupt on attribute change.

Breakpoints persist through page reloads and you can also browse the call stack.