- For Firefox, check out Firebug
2. For IE, check out Internet Explorer Developer Toolbar
Firebug is more powerful, but at least if you want/need to check something in IE, there’s an option.
Why would you care? The first time I used it was for stylesheet changes. Imagine you’re modifying a stylesheet but the element isn’t getting the style. Open the document in Firefox, inspect it, and you can see the styles applied in order, and by file. It will also show those that are defined, but are overridden at a higher level.