We were finding that many of our clients wanted to be able to add iFrames to wordpress pages, but were finding that it would only stay there if HTML mode was the only one used. If they entered visual mode on the editor then it would automatically delete the iframe.
So we have created an iFrame loader so that it will stay. Not only that we have created it so that it loads the iFrame using Javascript using the window.onload function. This means that the iFrame will not load at all until the complete page has downloaded. This is better because often an external iFrame will be the cause of a page failing to load quickly.
After tesing on Firefox, Safari, Chrome, IE, Flock and Opera, we released the plugin via wordpress. See the easy iframe loader plugin page for more information

