Will a javascript rewrite of city names on a home page from PPC traffic affect SEO negatively?

[Highforge]

We have a client that was originally based out of Orlando and the entire website is SEO'ed for Orlando.

In the long term we will start SEO'ing for Tampa.

But In the short term, we want to drive traffic from Tampa to the website but we want that traffic to know the business specializes in Tampa service (he has local teams there).

We are already using a ?_vsrefdom=changemynumber to change the phone number dynamically to a tampa area code for tracking purposes.

We want to dynamically change all iterations of 'Orlando' with 'Tampa' using the same javascript.  Does this cause any SEO problems or trip any alarms with Google?

[Netlogiq]

Hello,

Another solution that could also help at your conversion rates would be to make a landing page, specific for Tampa. Include great text, Calls to action and track your results.
A landing page can make wonders for any PPC Campaign.

[Highland]

I don't think that's a terribly good idea. First off, Google probably won't be able to tell you replaced the text so it will still say "Orlando" to them. Bots don't reliably run JS. Could it be cloaking? Possibly, but you're not doing it to trick anyone. Still, not a good idea to risk it.

What I would do is make a new page for Tampa. Make it unique, add your Tampa address (local search!) and start SEO efforts. Focus your efforts on Tampa and let Orlando just sit. There's no reason you can't rank well for both.