Automatically resize iframe height

I simply need a small bit of code so that I iframes will automatically resize their height to fit their content. The iFrame is being pulled from a different domain and we do not want to have to add or edit any code on the iframe source pages. It is going into a Drupal site, so PHP, Javascript or any other Drupal friendly language will work. Here are some examples of cross domain iFrames with dynamically resizing heights: [login to view URL] [login to view URL] [login to view URL] [login to view URL] I would like the footer go on top of the bottom of the iFrame to cover up the footer on the iFrame’s source site. You only need to do it once. After you give me the code I will do all the tedious work implement your code on a number of pages. You just have to do it 1 time! Here is the site: [login to view URL] If you can add a short animated intro effect which brings the iFrame onto the screen I will give additional $$$. Maybe have the iFrame slide down from the top or unravel like a scroll or something. If you can add this I will pay you more!