[jQuery] Executing Dynamic Javascript

[jQuery] Executing Dynamic Javascript


I have an issue that I initially thought was a jQuery problem, but
after simplifying things in preparation for posting my question, I see
that it's a fundamental javascript matter.
I don't understand why this works: http://pastebin.com/m3a767745
but this doesn't: http://pastebin.com/m346451b4
Note that the "external.js" file is just a single alert statement.
What I'm trying to do (with javascript) is create a <script> element,
place it inside a particular element and execute it.
Thanks,
-Rob