javascript events

I guess I'm needing some baby steps to get through a project I'm working on.
I have a form that I'm trying to auto-upload a file to.  I'm accomplishing this by attempting to override the submit event beforehand, and drop the file path info in there before actually submitting it.
So far, it's not working.
I've tried attaching an event handler to onsubmit and onclick, but when I invoke the click event of the button (actually a # anchor), it flags a script error before jumping to my handler.
Is there another event I should be trying first?  onNavigate?  I just don't know...
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sirbountyAuthor Commented:
This is the anchor I'm trying to click/execute:

<a href="#" onclick="return oamSubmitForm('zdmSummaryDetailsSubview:relContentViewpc1:tabZDMService:tabZDMServiceSettings:zdmDetailsForm','zdmSummaryDetailsSubview:relContentViewpc1:tabZDMService:tabZDMServiceSettings:zdmDetailsForm:saveZDMSessionConfig');" id="zdmSummaryDetailsSubview:relContentViewpc1:tabZDMService:tabZDMServiceSettings:zdmDetailsForm:saveZDMSessionConfig" class="ButtonLeft"><div class='ButtonRight'><div class='ButtonMiddle'>Save</div></div></a>
You can not with scripting set the file upload path, it has to be initiated by the Upload button in the form.
This is a security measure of all browsers.

Maybe I'm misunderstanding you
sirbountyAuthor Commented:
Sure, I've learned that, but there is technically a way around it...
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That is a webbrowser control not a browser and the code is 6 years old
sirbountyAuthor Commented:
Even so, surely there's a way to capture the submission beforehand...
I have it mostly working, it's just not finalizing somehow.  Running fiddler it tells me that it was expecting xxxx bytes, but the client sent 0, so even though the session appears correct, it's not getting passed.
Client sent 0 should be the clue

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sirbountyAuthor Commented:
I still think it's possible, but thanks for the comments.
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