Running JavaScript in debug mode

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I set several breakpoints in the file, but when I execute 
the file in debug mode the file executes with out stopping at any of the 
breakpoints.  At first I ran the file in a J2EE perspective then I also 
tried running the file in the debug perspective with the same result.  I’m 
hoping some one can point out to me what I am not doing correctly.

You should look at the two demo movies for using the JavaScript Debugger.

JavaScript debugger

URL Debugging