Show your email address to your website visitors while hiding it from hackers and spammers using ASCII character entities, javascript or both.

Display an inspirational quote or other little tidbits of text randomly selected from a set of encoded text for every visit or refresh of your web page by using a simple Javascript code.

Display random web banners from a set of predetermined pair of image banners and URLs using Javascript. This is very much useful if you intend to sell your own ad space in your website.

Use Javascript to display an image randomly selected from a set of preassigned images in a specific location in your website or webpage layout.

Similar to programming languages, Javascript also has function that can provide random numbers. You can modify this function to generate only certain numbers or use it in certain functions of your website such as displaying random image, random ad banner or random quote.

Create a simple animated image using Javascript without the color limitations of GIF format or browser support limitation of PNG.

For similar images with the same quality, the one with smaller file size is definitely better. Use Yahoo! Smush.it to reduce your image file size before using them in your websites. Here, I explain the capabilities, limitations and usage of Smush.it.

This PHP code will allow you to detect if your website is being accessed using a mobile device. If being accessed by a mobile device, your server can automatically present an alternative layout without changing the URL of your website.