@Description: Checks to see if a string is empty or not
@File: String/prototype/escapeHTML.js
@Author: Paul Visco
@Version: 1.0 11/19/07
@Return: Boolean Returns true if the string is empty, false otherwise
@Example:var str = '<p>hello</p>';
var newString = str.escapeHTML();
//newString = '<p>hello</p>'