How to define a single hotkey in a dialog box

[win]

In fact, they are all loading the same file: quiz.swf

Because it(swf) is included in quiz.html

If it is set to   ( str s.expandpath("$Desktop$\quiz.swf"))  be successful,

If it is set to  ( str s.expandpath("$Desktop$\quiz.html"))  be fail

But in many cases the swf file  included in the html file. How do I set it? In addition, the scroll bar on the right cannot be hidden.

I tried many ways to fail