var ElementMaxHeight = function() {
 this.initialize.apply(this, arguments);


ElementMaxHeight.prototype = {
 initialize: function(className) {
   this.elements = document.getElementsByClassName(className || 'maxheight');    
   this.textElement = document.createElement('span');
   this.textElement.appendChild(document.createTextNode('A'));
   this.textElement.style.display = 'block';
   this.textElement.style.position = 'absolute';
   this.textElement.style.fontSize = '1em';
   this.textElement.style.top = '-1000px';
   this.textElement.style.left = '-1000px';
   document.body.appendChild(this.textElement);
   this.textElementHeight = document.getDimensions(this.textElement).height;
   var __object = this;
   var __checkFontSize = this.checkFontSize;
   this.checkFontSizeInterval = window.setInterval(function() {return __checkFontSize.apply(__object)}, 500);

   this.expand();

   // Refresh elements height onResize event
   var __expand = this.expand;
   if (window.addEventListener) {
     window.addEventListener('resize', function(event) {return __expand.apply(__object, [( event || window.event)])}, false);
   } else if (window.attachEvent) {
     window.attachEvent('onresize', function(event) {return __expand.apply(__object, [( event || window.event)])});
   }
 },

 expand: function() {
   this.reset();
 	for (var i = 0; i < this.elements.length; i++) {  	
     this.elements[i].style.height = document.getDimensions(this.elements[i].parentNode).height + 'px';
 	}
 },

 reset: function() {
   for (var i = 0; i < this.elements.length; i++) {    
     this.elements[i].style.height = 'auto';
   }
 },

 checkFontSize: function() {
 	var height = document.getDimensions(this.textElement).height;
 	if(this.textElementHeight != height) {
 		this.textElementHeight = height;
 		this.expand();
 	}
 }  



if (!!document.evaluate) {
 document._getElementsByXPath = function(expression, parentElement) {
   var results = [];
   var query = document.evaluate(expression, parentElement || document,
     null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
   for (var i = 0, length = query.snapshotLength; i < length; i++)
     results.push(query.snapshotItem(i));
   return results;
 }


document.getElementsByClassName = function(className, parentElement) {
 if (!!document.evaluate) {
   var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
   return document._getElementsByXPath(q, parentElement);
 } else {
   var children = (parentElement || document.body).getElementsByTagName('*');
   var elements = [], child;
   for (var i = 0, length = children.length; i < length; i++) {
     child = children[i];
     if (child.className.length != 0 &&
         (child.className == className ||
          child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))) {      
       elements.push(child);
     }
   }
   return elements;
 }


document.getDimensions = function (element) {
 var display = element.style.display;
 if (display != 'none' && display != null) { // Safari bug
   return {width: element.offsetWidth, height: element.offsetHeight};
 }

 return {width: originalWidth, height: originalHeight};