Javascript syntax validation
Yesterday, I was stuck on a webpage where javascript validation was not working. I tried putting a debug point on firbug (a firefox extension) but it was not even getting called. There was no javascript errror on firefox/firebug. Finally i doubted the included validation javascript file. At that moment I needed a tool to test a js for its sytax validity. I found an online tool to do that on http://www.javascriptlint.com/online_lint.php. And I was right and there was an extra brace( } )in js file.
Once again thanks to Google God !