Time based pop-up

I did some additional digging.

 

 

There is a way to do what it is you are looking for using Code Injection. There is a a Video of Colin and Joe talking about code injection here:

 

http://devcentral.f5.com/weblogs/dctv/archive/2011/05/20/post-of-the-week-code-injection.aspx

 

 

That will lead you here were several different techniques are discussed:

 

http://devcentral.f5.com/Forums/tabid/53/aft/1178951/Default.aspx

 

 

Hope this helps.