Internet explorer has always been a programmer’s nightmare. You have finished a wonderful looking site, full of javascript effects just to find out that it doesn’t work in Internet Explorer. Its a real pain in the neck to find out which part of the script is causing errors in Internet Explorer.
In Firefox, we have tons of debugging option including the default error-console, firebug, etc which are very good tools. But in IE, the default error reporting mechanism shows wrong line no. most of the time, so its pretty useless.
I searched for debugging tools for javascript in IE and came across JS Companion. Its a pretty good addon for IE which can help you debug javascript easily. It solved my problems in seconds. They also have other addons for IE which gives pretty much same functionalities as firebug gives in FF but they aren’t free.
Peace!