internet explorer tab within firefox
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This is a new firefox extension.
To use it, just right click a link and choose "open this link in ie tab" you've now opened internet explorer in a tab of firefox!
This is great for the occasional times when a page doesn't work correctly in firefox, downloading windows updates, or designing a web page- since you can easily see how your webpage displays in IE with just one click and then switch back to Firefox.
Links:
read more | digg story