Upgrade the Pop\'s script

Hello, I want to upgrade the pop script The pop script now open the UP of the site I want to open the under of the site, POP-UNDER , I want the pop is under, not up my site Without losing the advantages and options of the script The script works on all browsers with default settings now I want the script after upgrade also works on all browsers with default settings Chrome, Firefox, Safari, Opera and IE with all version 6,7,8,9 For this, I need person for upgrade this script My budget for this project $30 I can pay directly, if the project done, and I saw the test on your site Thanks. **the file in attachments