dhunmoon

/**
* Document sizes are a browser compatibility nightmare because, although all browsers expose clientHeight and s
* crollHeight properties, they don't all agree how the values are calculated.
* @return {float} Height of the page after calulation.
* */
function getDocumentHeight(){
  var body = document.body,
      html = document.documentElement;

dhunmoon

/**
* @param {Object} el Element where the event needed to be added
* @param {string} type Type of event which is getting added
* @param {function} handler Event handler which will get called.
*/
function addHandler(el, type, handler) { 
    //overwrite the existing function
    if (el.addEventListener){ //DOM2 Events
        addHandler = function(el, type, handler) {
            el.addEventListener(type, handler, false)