Useful Functions: Validate values and other functions

This object can be used to validate values and provides other types of functions.

It provides several types of general purpose functions for use in most type of JavaScript applications.

Currently it provides functions for render elements with given colors and styles, send AJAX requests, perform validation of text values of many types, get the size of the page body area, manipulate date and time, encode text HTML entities, add an URL to browser favorites, detect the browser type, add and remove event handlers, etc..