572895 Small quick task done for me

I have a sales page, underneath i need timer that goes from 4 minutes to 0 After it goes 0 it should change real-time the price number (without refershing page) It needs to be all dynamic When the visitor goes to the check out page, the price should be passed by cookie (script is already done by it, just need tweaks) so on check out page new price will be placed. Same timer needs to appear on check out page and should start from the time that was on sales page before the visitor clicked add to cart. So basically time variable need to be passed to check out page too. Timer script is already developed, increase price with cookie also, all is required is just small tweaks. Its a simple job and shouldnt take more than an hour for experienced javascript/php coder. Not paying more than $10 ( no over bid) I need it ASAP, and have 2 more jobs after this and much more in the future.