You might want to check:
NetBean 7.0 (they have a great version for web development, which allows you to write HTML, CSS and JS with all the great flash drives / highlights / full code).
Eclipse has received an excellent version for web developers (PDT and others).
Notepad ++, UltraEdit, TextPad or any other good editor you like.
As for debug mode, profile and test - you have a tool for developers in Chrome, which is different. You might want to check out this short video that will give a lot of useful tips: http://www.youtube.com/watch?v=nOEw9iiopwI
Good luck
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