Can I Re-register and Debug codebehind registered javascript

I am working on an inherited application so the rational for what I am about to present is not always clear to even me...

In this app, in the page_load, the following code exists...
if (!ClientScript.IsClientScriptBlockRegistered("jsULMRightsObjects"))
            ClientScript.RegisterClientScriptInclude("jsULMRightsObjects", "RightsMgmt.js");            

My first question is, while the app is running through my dev server (locally), if I change the code in RightsMgmt.js and "Refresh" the page in the browser.  Will my updated code be re-registered?  The code does NOT sit within an IsPostback check.

My second question is can I debug this code in VS?  I have put break points in the RightsMgmt.js file but they not being hit due to "no symbols loaded".  

In the past I have been able to debug external js files but in those cases I've used a link tag in the aspx page.

Thanks in advance for any help...

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BruceAuthor Commented:
Update:  I have tested in another application that I can indeed set a break point, and have it hit, in a RegisterClientScriptInclude javascript file.

I have checked my IE for Disable Script Debugging and it is not set on.  

I have also looked at the "Attach to Process" dialog and the instance of IE that I am wanting to debug is already "attached".

Hope this helps refine my questions.
BruceAuthor Commented:
Update: I think I have it.  My javascript was not "well-formed" shall we say.  I corrected a function definition and now I can set and htit a breakpoint in the file.

Is this possible?  Or did I change something else unknowingly and now it works?

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