Javascript Pop-up

look at this link - [login to view URL] I want a Javascript code such that 1) Suppose a use arrives at this link using a keyword like abap or any such keyword 2) If he uses the "Back" button in the browser to go back to search results or uses the "close" button to close the window The attached popup should show. The pop-up I have attached is a rough template and will be changed later The objective is to reduce bounce rate Your solution should work on IE8 and above , Chrome and FF NOTE:- For people NOT arriving on the page from "google" (direct traffic , people arriving at the page from some other page in the website) This pop up should NOT SHOW! Also , your solution should work for all pages and just not [login to view URL] who fit the above mentioned scenario - basicaly people arriving from search who leave without visiting any other page Give me a quotation and time required to complete this ...