IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox browser.
This is a great tool for web developers, since you can easily see how your web page displayed in IE with just one click and then switch back to Firefox.
Have any problems, questions, or suggestions? You can post on:
http://forums.mozillazine.org/viewtopic.php?t=505032
Download IE Tab For Firefox 3.6. It is also compatible with earlier versions
Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE.