We have released a CrossBrowserTesting plugin for Selenium Builder that allows you to record interactions with your site and play them back against any of the selenium enabled browsers at CrossBrowserTesting. This makes it easy to get started with Selenium scripting – you just point and click to record your script, saving individual scripts or test suites. You can then choose to execute these scripts against our remote browsers. To get started, check out our tutorial.
In addition, you can use our Selenium Builder plugin to save a selenium script to our screenshot system. This allows you to script the screenshot engine to a certain point, then take a windowed, full-page, and full-page chromeless screenshot of this page. You can then use the automated screenshot comparison engine to look for difference between pages.