Node Reference Help

[owerio]

Hello. I seek for a tool that will show me reference code of the html nodes. For some pages there are lots of deeply nested nodes and it gets very cumbersome to write those referencing code for them. Is there any tool or FF extension that will show me the node reference code , such as document.getElementById("navigation"); for div#navigation node? I need this for greasemonkey scripts.
Thanks in advance.

[jimfraser]

IE developers toolbar - not sure but I think Firebug for FF

[owerio]

Hello. Thanks for your reply. I couldnt find the reference code facility in IE Developers Toolbar. I actually seek the tool that will ,if possible, create node reference code (e.g document.getElementsByTagName[0]) automatically when I select the node in DOM tree , to save me typing those annoying node
reference code?