Pop Up On Site Exit

Pop Up On Exit Of Site. We have a two websites 1)[login to view URL] and 2)[login to view URL] Our website users surf between these two sites that are hoasted by two different ISP's. Looking For... I will place a code on the home page of www.xyz.com. This code will create a popunder window. Within this popunder window there will be a function that will keep checking the url of the parent window. This popunder should read the url of the parent window and when a state comes that the parent window url is something else than [login to view URL] or [login to view URL], the popunder window should popup with a message saying thanks for visiting the site. Also note both websites have secured https:// and non-secured http:// pages. When user checksout the https:// pages are loaded. This difference should also be handled the same way as above. The code should be browser compatible and all versions. Very Important. I am looking for a sturdy solution which can either be developed and javascript or java applet. I guess if javaapplet, I will put the applet in the popunder and the applet can contiously monitor the parent window url and pass the value to the webpage. Just Thoughts from my side. Thanks... ## Deliverables Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. Complete copyrights to all work purchased. ## Platform Compatible to all browsers.