AJAX: In situ edit
A simple edit in place using Prototype, based on the tutorial @ 24ways.org

A simple page hits counter that uses a single cookie to tell the user how many times they have visited the page.

The following script is a single interface for pre-validating any HTML form. It lets you validate your form data the way you want, while handling the rudimentary tasks itself.

1) Change just one variable to make it work with $_GET or $_POST or $_REQUEST.

2) Name which elements are 'required' all at once in a hidden HTML text input.

3) Easily provide field descriptions in hidden HTML text inputs that you can use to print error statements.

4) Call a single function to print out error statements that you can easily style with CSS.

5) It automatically checks if fields marked 'required' have been filled out.

Most of the pre-validation code is from PHP 5: Unleashed by Sams Publishing. I found it extremely useful for a recent project. Sharing it here, I removed some unnecessary functions, and tried to simplify some points.

All the comments are my own; hopefully I provided more than enough explanation.

You can search for "@" or something like mail information in your page source code. You'll find nothing.
You can have link of your mail with a title or just you mail address as the title. Hope this code have no problem...

Over the summer, I worked on a project in which I needed to parse logfiles which were in the following format:

IP|USE|TIME>IP2|USE2|TIME2>

and so on.

When I parsed them to display the log file in a user-friendly fashion, I used the following code:

Gives you control to perform actions when the control key and the mouse button is clicked in the same time. Something similar to selecting elements in Windows with ctrl+click.

Just change the event.ctrlKey to event.shiftKey to make it shift+click. If you don't get it don't worry the snippet contains the demo for shift+click too.

You may need to change the event.which though 1 = left click, 2 = middle click, 3 = right click(at least in firefox 1.5.0.5)

Strips all tags from any string.

This creates a black screen if the browser is inactive for a certain amout of time. I am not sure if it works in IE too but works fine in Firefox.

Just confirms if the user really wants to save the page or just hit the Ctrl+S accidentally. Works in FF maybe in IE too.

This simple function simply removes the character at the given index from a string.

NOTE: The count starts from 0