Autoclick script for PopUnders

I need a script for my website. This script should be able to open automatic a link on my site. This technology must be work that after this autoclick should be open an popunder window from third party. I need this script, because users, who use chrome as browser must be click on a link, so popunder will open. Users who use firefox or internet explorer do not click on any site. Popunder open automaticly. Unfortunately most users use chrome as browser.