I have been using the new web IDE from JetBrains (the makers of Resharper) called WebStorm through several of their preview releases now. I have to say I am really impressed. The Javascript and CSS editors seem to be miles ahead of Visual Studio (2008 at least).  They are projecting a beta release this month and a 1.0 release sometime in the 2nd quarter. Unless the price ends up being super outrageous (which I doubt) I will definitely be adding it to my toolbox. I would recommend giving it a try, especially if you are a Resharper junky and are doing a lot of front end development.