We want to show an email signup when someone leaves our site. Not when someone leaves a particular page, but when they leave our entire site. We want users cookied so that we can control whether they see the popup more than 1 times in 60 days.
We are looking for the best solution. We understand that there might be problems with popup blockers. We want a solution that will work much of the time, especially in IE 7 and Firefox. We will pay only after the solution shows a successful display rate of 75%.
Again, the solution needs to work when they exit our site not when they go from one page of the site to another.
IF YOU FEEL THAT THIS IS NOT POSSIBLE, TELL US AND PROPOSE THE NEXT BEST OPTION (Example: DHTML SLIDE IN, POP UNDER). If enough people tell us that this is not possible, and we are not convinced that a workable solution exists, we will choose another technique.