Mobile Spoofing

Does anyone know of a script / software / method of spoofing mobile devices. I am able to spoof my User Agent and device resolution etc. easily enough in Chrome, however certain content is still being treated differently to how it would be displayed on a mobile device. I'm specifically talking about ads which become non-clickable when displayed on a spoofed setup; they are clickable when viewed on a native mobile device. I can only assume that the ad server is picking up other information from the device such as UDID. Can this be spoofed from a PC setup?

Any help would be much appreciated.

Did you try to test it with emulators for mobile devices ?There are various online and offline emulators for specific browsers like Opera, iphone emulator, android emulators... Some of mobile browsers doesn't support flash and java script and emulators are giving better picture what is working or not working on real mobile devices.
Also are you changing user agents manually or with some plugin like User Agent Switcher for firefox ? http://chrispederick.com/work/user-agent-switcher/

I've tried manually changing the User Agent as well as using various plugins. The sites are correctly identifying me as a mobile device, however it is certain functionality that is different. This is due to the differing ways that the devices / browsers run certain JavaScript functions. I have tried all of the various emulation tools out there are cannot replicate certain functionality that is present on real mobile devices. Despite emulation tools stating they will render using the same JavaScript methods as the actual device, certain functions fail to behave in the same way as the actual device.

The only success I have had is by running the android SDK on my machine, however this is quite system intensive for what i want to do. I am looking to have multiple iFrames of the same page and so running a full blown emulation is not really suited. This method only allows android emulation as well.

Update - I've now had some software built to manage this. Works a charm.

You can use android and iOS simulators for this(if you're on a mac), or you could even install android on a vm.