Change action query field

[Tomasr]

I have the form with action URL below, there is EMail tag ant the end of URL, how to change it value to another one?

http://www.bababsjsjd.com/pdfengine.dll/Upload?EMail=ChangeThing

[Jon Hanlon]

That part of the URL is known as 'search'
(As it was initially used in search engines like Google.)
http://msdn.microsoft.com/workshop/author/dhtml/reference/objects/obj_location.asp