using LTM VE as Firewall

OK, if I have some case like this :

 

 

1. user will open web page via browser, web page can be anything not the one set up in pool

 

2. on datagroups, we will set up url/domain list

 

3. when user access a page which existed in domain list, big-ip will try to insert html page into the web page

 

4. the web page shown to user it will be the one after big-ip made changes.

 

 

How to make LTM VE to do like that? thanks