Minimise the number of JavaScript files

Try not to use too many different JavaScript files. Each separate file that the browser has to load incurs an overhead. You may consider to merge and minimise JavaScript files before you publish your website. This to reduce the bandwidth usage and lower webpage load time.

Other examples in Guidelines (JavaScript tutorial)
Result from the Online TryIt-Editor
chrome 1.0safari 1.0Firefox 1.0ie 3.0opera 4.0