[c-nsp] ASA: NAT based on destination URL?

[Per A]

I'm looking for an option to redirect some traffic from a web server that can not handle it's current load. 

For example, can I send traffic bound for hosta.domain.com/images to one NAT destination while traffic bound for hosta.domain.com/anythingelse to another NAT destination? 

This is a temporary work-around to buy the time it will take to rebuild the application. 

Would it be possible to use a Webtype Access List in conjuction with Policy NAT, for example? 

If that wouldn't work, is there functionality on the ASA platform that could be used to get this result? 

Thanks in advance for your help.
 
Per