Add Facebook Like Popup with timer to close popup in opencart vQmod

i need add facebook like popup with timer to close the pop up and if the person liked our page the popup will be closed immediately, this module will be added to my store(opencart system) [login to view URL] page, the popup only show twice to the costumer ( if the costumer clear cookies it will be show twice again ) and although costumer hasn't clear cookies it will be appear again after 7days , the demo is in here [login to view URL] check it out