// page init
jQuery(function(){
	clearFormFields({
		clearInputs: true,
		clearTextareas: true,
		passwordFieldText: false,
		addClassFocus: "focus",
		filterClass: "default"
	});
	initCustomForms();
	
	
});


// clear inputs
function clearFormFields(o)
{
	if (o.clearInputs == null) o.clearInputs = true;
	if (o.clearTextareas == null) o.clearTextareas = true;
	if (o.passwordFieldText == null) o.passwordFieldText = false;
	if (o.addClassFocus == null) o.addClassFocus = false;
	if (!o.filterClass) o.filterClass = "default";
	if(o.clearInputs) {
		var inputs = document.getElementsByTagName("input");
		for (var i = 0; i < inputs.length; i++ ) {
			if((inputs[i].type == "text" || inputs[i].type == "password") && inputs[i].className.indexOf(o.filterClass) == -1) {
				inputs[i].valueHtml = inputs[i].value;
				inputs[i].onfocus = function ()	{
					if(this.valueHtml == this.value) this.value = "";
					if(this.fake) {
						inputsSwap(this, this.previousSibling);
						this.previousSibling.focus();
					}
					if(o.addClassFocus && !this.fake) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				inputs[i].onblur = function () {
					if(this.value == "") {
						this.value = this.valueHtml;
						if(o.passwordFieldText && this.type == "password") inputsSwap(this, this.nextSibling);
					}
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
				if(o.passwordFieldText && inputs[i].type == "password") {
					var fakeInput = document.createElement("input");
					fakeInput.type = "text";
					fakeInput.value = inputs[i].value;
					fakeInput.className = inputs[i].className;
					fakeInput.fake = true;
					inputs[i].parentNode.insertBefore(fakeInput, inputs[i].nextSibling);
					inputsSwap(inputs[i], null);
				}
			}
		}
	}
	if(o.clearTextareas) {
		var textareas = document.getElementsByTagName("textarea");
		for(var i=0; i<textareas.length; i++) {
			if(textareas[i].className.indexOf(o.filterClass) == -1) {
				textareas[i].valueHtml = textareas[i].value;
				textareas[i].onfocus = function() {
					if(this.value == this.valueHtml) this.value = "";
					if(o.addClassFocus) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				textareas[i].onblur = function() {
					if(this.value == "") this.value = this.valueHtml;
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
			}
		}
	}
	function inputsSwap(el, el2) {
		if(el) el.style.display = "none";
		if(el2) el2.style.display = "inline";
	}
}


var _selectHeight = 20;

var _forms = document.getElementsByTagName('form');
var inputs = new Array();
var selects = new Array();
var labels = new Array();
var radios = new Array();
var radioLabels = new Array();
var checkboxes = new Array();
var checkboxLabels = new Array();
var buttons = new Array();
var selects = new Array();
var all_selects = false;
var active_select = null;
var agt = navigator.userAgent.toLowerCase();
var selectText = "please select";
var IN_CFORMS = true;
var language = false;

function initCustomForms() {
	if(!document.getElementById) {return false;}
	getElements();
	separateElements();
	//replaceRadios();
	//replaceCheckboxes();
	replaceSelects();

	var _selects = document.getElementsByTagName('select');
	var _SelctClassName = [];
	if (_selects) {
		for (var i = 0; i < _selects.length; i++) {
			if (_selects[i].className != '' && _selects[i].className != 'outtaHere')
				_SelctClassName[i] = ' drop-'+_selects[i].className;
		}
		for (var i = 0; i < _SelctClassName.length; i++) {
			var _selectDrop = document.getElementById('optionsDiv'+i);
			if (_selectDrop) {
				if (_SelctClassName[i]) 
					_selectDrop.className += _SelctClassName[i];
			}
		}
	}
}


// getting all the required elements
function getElements() {
	for (var nf = 0; nf < document.getElementsByTagName("form").length; nf++) {
		for(var nfi = 0; nfi < document.forms[nf].getElementsByTagName("input").length; nfi++) {inputs.push(document.forms[nf].getElementsByTagName("input")[nfi]);}
		for(var nfl = 0; nfl < document.forms[nf].getElementsByTagName("label").length; nfl++) {labels.push(document.forms[nf].getElementsByTagName("label")[nfl]);}
		for(var nfs = 0; nfs < document.forms[nf].getElementsByTagName("select").length; nfs++) {selects.push(document.forms[nf].getElementsByTagName("select")[nfs]);}
	}
}

// separating all the elements in their respective arrays
function separateElements() {
	var r = 0; var c = 0; var t = 0; var rl = 0; var cl = 0; var tl = 0; var b = 0;
	for (var q = 0; q < inputs.length; q++) {
		if(inputs[q].type == "radio") {
			radios[r] = inputs[q]; ++r;
			for(var w = 0; w < labels.length; w++) {
				if((inputs[q].id) && labels[w].htmlFor == inputs[q].id)
				{
					radioLabels[rl] = labels[w];
					++rl;
				}
			}
		}
		if(inputs[q].type == "checkbox") {
			checkboxes[c] = inputs[q]; ++c;
			for(var w = 0; w < labels.length; w++) {
				if((inputs[q].id) && (labels[w].htmlFor == inputs[q].id))
				{
					checkboxLabels[cl] = labels[w];
					++cl;
				}
			}
		}
		if((inputs[q].type == "submit") || (inputs[q].type == "button")) {
			buttons[b] = inputs[q]; ++b;
		}
	}
}

//replacing radio buttons
function replaceRadios() {
	for (var q = 0; q < radios.length; q++) {
		radios[q].className += " outtaHere";
		var radioArea = document.createElement("div");
		if(radios[q].checked) {
			radioArea.className = "radioAreaChecked";
		}
		else
		{
			radioArea.className = "radioArea";
		}
		radioArea.id = "myRadio" + q;
		radios[q].parentNode.insertBefore(radioArea, radios[q]);
		radios[q]._ra = radioArea;

		radioArea.onclick = new Function('rechangeRadios('+q+')');
		if (radioLabels[q])
		{
			radioLabels[q].onclick = new Function('rechangeRadios('+q+')');
		}
	}
	return true;
}

//checking radios
function checkRadios(who) {
	var what = radios[who]._ra;
	for(var q = 0; q < radios.length; q++) {
		if((radios[q]._ra.className == "radioAreaChecked")&&(radios[q]._ra.nextSibling.name == radios[who].name))
		{
			radios[q]._ra.className = "radioArea";
		}
	}
	what.className = "radioAreaChecked";
}

//changing radios
function changeRadios(who) {
	if(radios[who].checked) {
		for(var q = 0; q < radios.length; q++) {
			if(radios[q].name == radios[who].name) {
				radios[q].checked = false;
			} 
			radios[who].checked = true; 
			checkRadios(who);
		}
	}
}

//rechanging radios
function rechangeRadios(who) {
	if(!radios[who].checked) {
		for(var q = 0; q < radios.length; q++) {
			if(radios[q].name == radios[who].name)	{
				radios[q].checked = false; 
			}
			radios[who].checked = true; 
			checkRadios(who);
		}
	}
}

//replacing checkboxes
function replaceCheckboxes() {
	for (var q = 0; q < checkboxes.length; q++) {
		checkboxes[q].className += " outtaHere";
		var checkboxArea = document.createElement("div");
		if(checkboxes[q].checked) {
			checkboxArea.className = "checkboxAreaChecked";
		}
		else {
			checkboxArea.className = "checkboxArea";
		}
		checkboxArea.id = "myCheckbox" + q;
		checkboxes[q].parentNode.insertBefore(checkboxArea, checkboxes[q]);
		checkboxes[q]._ca = checkboxArea;
		checkboxArea.onclick = checkboxArea.onclick2 = new Function('rechangeCheckboxes('+q+')');
		if (checkboxLabels[q])
		{
			checkboxLabels[q].onclick = new Function('changeCheckboxes('+q+')');
		}
		
		checkboxes[q].onkeydown = checkEvent;
	}
	return true;
}

//checking checkboxes
function checkCheckboxes(who, action) {
	var what = checkboxes[who]._ca;
	if(action == true) {
		what.className = "checkboxAreaChecked";
		what.checked = true;
	}
	if(action == false) {
		what.className = "checkboxArea";
		what.checked = false;
	}
}

//changing checkboxes
function changeCheckboxes(who) {
	if(checkboxes[who].checked) {
		checkCheckboxes(who, false);
	}
	else {
		checkCheckboxes(who, true);
	} 
}

//rechanging checkboxes
function rechangeCheckboxes(who) {
	var tester = false;
	if(checkboxes[who].checked == true) {
		tester = false;
	}
	else {
		tester = true;
	}
	checkboxes[who].checked = tester;
	checkCheckboxes(who, tester);
}

//check event
function checkEvent(e) {
	if (!e) var e = window.event;
	if(e.keyCode == 32) {for (var q = 0; q < checkboxes.length; q++) {if(this == checkboxes[q]) {changeCheckboxes(q);}}} //check if space is pressed
}


function replaceSelects() {
	for(var q = 0; q < selects.length; q++) {
	if (!selects[q].replaced && selects[q].offsetWidth)
	{
		selects[q]._number = q;
		//create and build div structure
		var selectArea = document.createElement("div");
		var left = document.createElement("span");
		left.className = "left";
		selectArea.appendChild(left);
		
		var disabled = document.createElement("span");
		disabled.className = "disabled";
		selectArea.appendChild(disabled);
		
		selects[q]._disabled = disabled;
		var center = document.createElement("span");
		var button = document.createElement("a");
		var text = document.createTextNode(selectText);
		center.id = "mySelectText"+q;
		
		var stWidth = selects[q].offsetWidth;
		selectArea.style.width = stWidth + "px";
		if (selects[q].parentNode.className.indexOf("type2") != -1){
			button.href = "javascript:showOptions("+q+",true)";
		} else {
			button.href = "javascript:showOptions("+q+",false)";
		}
		button.className = "selectButton";
		selectArea.className = "selectArea";

		selectArea.className += " " + selects[q].className;
		selectArea.id = "sarea"+q;
		center.className = "center";
		center.appendChild(text);
		selectArea.appendChild(center);
		selectArea.appendChild(button);
		
		//hide the select field
		selects[q].className += " outtaHere";
		//insert select div
		selects[q].parentNode.insertBefore(selectArea, selects[q]);
		//build & place options div

		var optionsDiv = document.createElement("div");
		
		var optionsList = document.createElement("ul");
		optionsDiv.innerHTML += "<div class='select-top'><div></div></div>";
		optionsDiv.appendChild(optionsList);
		
		selects[q]._options = optionsList;
		
		optionsDiv.style.width = stWidth + "px";
		optionsDiv._parent = selectArea;
		
		optionsDiv.className = "optionsDivInvisible";
		optionsDiv.id = "optionsDiv"+q;
		populateSelectOptions(selects[q]);
		optionsDiv.innerHTML += "<div class='select-bottom'><div class='select-bottom-left'></div><div class='select-bottom-right'></div></div>";
		document.getElementsByTagName("body")[0].appendChild(optionsDiv);
		selects[q].replaced = true;
		}
    all_selects = true;
	}
	var pathname = window.location.pathname;
  if($('#optionsDiv2').length && pathname.indexOf('libraries/chooser') < 0) {
    var newInnerText = "<div class='select-top'><div></div></div>";
    newInnerText += "<ul class='advSearchUl'>";
    newInnerText += "<li style='margin-right: 22px; width: 120px; padding-left: 30px;'>Match:<select class='advSearchClass' id='advSearch' onchange=\"fillTheValue('advSearchType', event)\"><option value='1'>ANY</option><option value='2'>ALL</option></select></li>";
    newInnerText += "<li><input type='text' class='advSearchClass' id='bookname' value='Enter Book Title:' onkeyup=\"fillTheValue('bookname', event)\" onfocus=\"changeValue('bookname', 'focus')\" onblur=\"changeValue('bookname', 'blur')\" /></li>";
    newInnerText += "<li><input type='text' class='advSearchClass' id='author' value='Enter Author:' onkeyup=\"fillTheValue('author', event)\" onfocus=\"changeValue('author', 'focus')\" onblur=\"changeValue('author', 'blur')\" /></li>";
    newInnerText += "<li><input type='text' class='advSearchClass' id='subject' value='Enter Category:' onkeyup=\"fillTheValue('subject', event)\" onfocus=\"changeValue('subject', 'focus')\" onblur=\"changeValue('subject', 'blur')\" /></li>";
    newInnerText += "<li><input type='text' class='advSearchClass' id='publisher' value='Enter Publisher:' onkeyup=\"fillTheValue('publisher', event)\" onfocus=\"changeValue('publisher', 'focus')\" onblur=\"changeValue('publisher', 'blur')\" /></li>";
    newInnerText += "</ul><div class='select-bottom'><div class='select-bottom-left'></div>"
    newInnerText += "<div class='select-bottom-right'></div></div>";
    
    document.getElementById('optionsDiv2').innerHTML = newInnerText;
  }
  $('#mySelectText2').click(function(){
    showOptions(2, false);
  });
}

function fillTheValue(id, e) {
  if(id != 'advSearchType') {
    if (e.keyCode == 13 || e.which == 13) {
      $('#advanceSearch-form').submit();
    }
    var idVal = id+'Val';
    document.getElementById(idVal).value = document.getElementById(id).value;
  } else {
    document.getElementById('advSearchType').value = document.getElementById('advSearch').value;
  }
}

function changeValue(id, condition) {
  var inputVal = document.getElementById(id).value;
  var idVal = id+'Val';
  var changeVal = '';
  switch(id)
  {
  case 'bookname':
    changeVal = 'Enter Book Title:';
  break;
  case 'author':
    changeVal = 'Enter Author:';
  break;
  case 'subject':
    changeVal = 'Enter Category:';
  break;
  case 'publisher':
    changeVal = 'Enter Publisher:';
  break;
  }
  if (inputVal == changeVal && condition == 'focus') {
    document.getElementById(id).value = '';
  }
  var checkval = inputVal;
  if ((inputVal == "" || checkval.replace(/\s/g,'') == '') && condition == 'blur') {
    document.getElementById(idVal).value = '';
    document.getElementById(id).value = changeVal;
  }
}

//collecting select options
function populateSelectOptions(me) {
	me._options.innerHTML = "";
	
	for(var w = 0; w < me.options.length; w++) {
		
		var optionHolder = document.createElement('li');
		var optionLink = document.createElement('a');
		var optionTxt;
		if (me.options[w].title.indexOf('image') != -1) {
			optionTxt = document.createElement('img');
			optionSpan = document.createElement('span');
			optionTxt.src = me.options[w].title;
			optionSpan = document.createTextNode(me.options[w].text);
		} else {
			optionTxt = document.createTextNode(me.options[w].text);
		}
		
		optionLink.href = "javascript:showOptions("+me._number+"); selectMe('"+me.id+"',"+w+","+me._number+");";
		if (me.options[w].title.indexOf('image') != -1) {
			optionLink.appendChild(optionTxt);
			optionLink.appendChild(optionSpan);
		} else {
			optionLink.appendChild(optionTxt);
		}
		optionHolder.appendChild(optionLink);
		me._options.appendChild(optionHolder);
		//check for pre-selected items
		if(me.options[w].selected) {
			selectMe(me.id,w,me._number);
		}
	}
	if (me.disabled) {
		me._disabled.style.display = "block";
	}
	else {
		me._disabled.style.display = "none";
	}
  if (me._number == 1) {
    $.post(webroot+'pages/setLang', { check : 'check' },function(data) {
      w = data.charAt(0);
      var ioption = 0;
      if (w != 8) {
        $("select.lang option").each(function() {
          if ($(this).val() == data.substring(0,2)) {
            selectMe(me.id,ioption,me._number);
          }
          ioption++;
        });
      }
    });
  }
}

//selecting me
function selectMe(selectFieldId,linkNo,selectNo) {
	selectField = selects[selectNo];
	for(var k = 0; k < selectField.options.length; k++) {
		if(k==linkNo) {
			selectField.options[k].selected = true;
		}
		else {
			selectField.options[k].selected = false;
		}
	}
  
	//show selected option
	textVar = document.getElementById("mySelectText"+selectNo);
	var newText;
	var optionSpan;
	if (selectField.options[linkNo].title.indexOf('image') != -1) {
		newText = document.createElement('img');
		newText.src = selectField.options[linkNo].title;
		optionSpan = document.createElement('span');
		optionSpan = document.createTextNode(selectField.options[linkNo].text);
	} else {
		newText = document.createTextNode(selectField.options[linkNo].text);
	}
	if (selectField.options[linkNo].title.indexOf('image') != -1) {
		if (textVar.childNodes.length > 1) textVar.removeChild(textVar.childNodes[0]);
		textVar.replaceChild(newText, textVar.childNodes[0]);	
		textVar.appendChild(optionSpan);	
	} else {
		if (textVar.childNodes.length > 1) textVar.removeChild(textVar.childNodes[0]);
		textVar.replaceChild(newText, textVar.childNodes[0]);	
	}
  if(selectNo == 0 && language) {
  document.getElementById('searchType').value = selectField.options[linkNo].text;
  }
	if (selectField.onchange)
  {
    eval(selectField.onchange());
  }

  if (selectNo == 1 && language) {
    changeLanguage(selectField.options[linkNo].value);
  }
}


//showing options
function showOptions(g) {
    language = true;
		_elem = document.getElementById("optionsDiv"+g);
		var divArea = document.getElementById("sarea"+g);
		if (active_select && active_select != _elem) {
			active_select.className = active_select.className.replace('optionsDivVisible',' optionsDivInvisible');
			active_select.style.height = "auto";
		}
		if(_elem.className.indexOf("optionsDivInvisible") != -1) {
			_elem.style.left = "-9999px";
			_elem.style.top = findPosY(divArea) + _selectHeight + 'px';
			_elem.className = _elem.className.replace('optionsDivInvisible','');
			_elem.className += " optionsDivVisible";
			/*if (_elem.offsetHeight > 200)
			{
				_elem.style.height = "200px";
			}*/
			_elem.style.left = findPosX(divArea) + 'px';
			
			active_select = _elem;
			if(document.documentElement)
			{
				document.documentElement.onclick = hideSelectOptions;
			}
			else
			{
				window.onclick = hideSelectOptions;
			}
		}
		else if(_elem.className.indexOf("optionsDivVisible") != -1) {
			_elem.style.height = "auto";
			_elem.className = _elem.className.replace('optionsDivVisible','');
			_elem.className += " optionsDivInvisible";
		}
		
		// for mouseout
		/*_elem.timer = false;
		_elem.onmouseover = function() {
			if (this.timer) clearTimeout(this.timer);
		}
		_elem.onmouseout = function() {
			var _this = this;
			this.timer = setTimeout(function(){
				_this.style.height = "auto";
				_this.className = _this.className.replace('optionsDivVisible','');
				if (_elem.className.indexOf('optionsDivInvisible') == -1)
					_this.className += " optionsDivInvisible";
			},200);
		}*/
}

function hideSelectOptions(e)
{
	if(active_select)
	{
		if(!e) e = window.event;
		var _target = (e.target || e.srcElement);
		if(isElementBefore(_target,'selectArea') == 0 && isElementBefore(_target,'optionsDiv') == 0)
		{
			active_select.className = active_select.className.replace('optionsDivVisible', '');
			active_select.className = active_select.className.replace('optionsDivInvisible', '');
			active_select.className += " optionsDivInvisible";
			active_select = false;

			if(document.documentElement)
			{
				document.documentElement.onclick = function(){};
			}
			else
			{
				window.onclick = null;
			}
		}
	}
}

function isElementBefore(_el,_class)
{
	var _parent = _el;	
	do
	{
		_parent = _parent.parentNode;
	}
	while(_parent && _parent.className != null && _parent.className.indexOf(_class) == -1)
	
	if(_parent.className && _parent.className.indexOf(_class) != -1)
	{
		return 1;
	}
	else
	{
		return 0;
	}
	
}

function findPosY(obj) {
	var posTop = 0;
	while (obj.offsetParent) {posTop += obj.offsetTop; obj = obj.offsetParent;}
	return posTop;
}
function findPosX(obj) {
	var posLeft = 0;
	while (obj.offsetParent) {posLeft += obj.offsetLeft; obj = obj.offsetParent;}
	return posLeft;
}

function changeLanguage(lang) {
  var locale = lang;
  $.post(webroot+'pages/setLang', { lang : locale },function(data) {
    location.reload(true);
  });
}

// page init
function initNavFix() {
	new touchNav({
		navBlock: 'nav'
	});
}

if (window.addEventListener) window.addEventListener("load", initNavFix, false);
else if (window.attachEvent) window.attachEvent("onload", initNavFix);

// navigation accesibility module
function touchNav(options) {
	this.options = {
		mobileReg: /(ipad|iphone|ipod|android|blackberry|iemobile)/gi,
		hoverClass: 'hover',
		followLink: false,
		menuItems: 'li',
		menuOpener: 'a',
		menuDrop: 'div',
		navBlock: null
	}
	for(var p in options) {
		this.options[p] = options[p];
	}
	this.init();
}
touchNav.prototype = {
	init: function() {
		this.isMobile = (this.options.mobileReg).test(navigator.userAgent);
		if(typeof this.options.navBlock === 'string') {
			this.menu = document.getElementById(this.options.navBlock);
		} else if(typeof this.options.navBlock === 'object') {
			this.menu = this.options.navBlock;
		}
		if(this.menu) {
			this.getElements();
			this.addEvents();
		}
	},
	getElements: function() {
		this.menuItems = this.menu.getElementsByTagName(this.options.menuItems);
	},
	hideActiveDropdown: function() {
		if(this.activeParent) {
			for(var i = 0; i < this.menuItems.length; i++) {
				this.removeClass(this.menuItems[i], this.options.hoverClass);
			}
			this.activeParent = null;
		}
	},
	getOpener: function(obj) {
		for(var i = 0; i < obj.childNodes.length; i++) {
			if(obj.childNodes[i].tagName && obj.childNodes[i].tagName.toLowerCase() == this.options.menuOpener.toLowerCase()) {
				return obj.childNodes[i];
			}
		}
		return false;
	},
	getDrop: function(obj) {
		for(var i = 0; i < obj.childNodes.length; i++) {
			if(obj.childNodes[i].tagName && obj.childNodes[i].tagName.toLowerCase() == this.options.menuDrop.toLowerCase()) {
				return obj.childNodes[i];
			}
		}
		return false;
	},
	addEvents: function() {
		// mobile event handlers
		if(this.isMobile) {
			for(var i = 0; i < this.menuItems.length; i++) {
				this.menuItems[i].touchNav = this;
				if(this.getDrop(this.menuItems[i])) {
					this.addHandler(this.getOpener(this.menuItems[i]), 'click', this.bind(this.clickHandler,this.menuItems[i]));
				}
			}
			this.addHandler(document.body, 'click', this.bind(this.outsideHandler, this));
			this.addHandler(document.body, 'touchstart', this.bind(this.outsideHandler, this));
		}
		// desktop event handlers
		else {
			for(var i = 0; i < this.menuItems.length; i++) {
				this.menuItems[i].touchNav = this;
				this.addHandler(this.menuItems[i], 'mouseover', this.mouseoverHandler);
				this.addHandler(this.menuItems[i], 'mouseout', this.mouseoutHandler);
			}
		}
	},
	outsideHandler: function(e) {
		var childFlag = false;
		if(this.activeParent) {
			this.outsideTarget = e.target || e.currentTarget || e.srcElement;
			while (this.outsideTarget.parentNode) {
				if(this.activeParent == this.outsideTarget) {
					childFlag = true;
					break;
				}
				this.outsideTarget = this.outsideTarget.parentNode;
			}
			if(!childFlag) {
				this.hideActiveDropdown();
			}
		}
	},
	mouseoverHandler: function() {
		this.touchNav.addClass(this, this.touchNav.options.hoverClass);
	},
	mouseoutHandler: function() {
		this.touchNav.removeClass(this, this.touchNav.options.hoverClass);
	},
	clickHandler: function(e) {
		// get current dropdown
		var tNav = this.touchNav;
		tNav.currentElement = e.currentTarget || e.srcElement;
		tNav.currentParent = tNav.currentElement.parentNode;

		// hide previous drop (if exists)
		if(tNav.activeParent && !tNav.isParent(tNav.activeParent, tNav.currentParent) && tNav.currentParent != tNav.activeParent) {
			tNav.hideActiveDropdown();
		}

		// handle current drop
		if(tNav.hasClass(tNav.currentParent, tNav.options.hoverClass)) {
			tNav.removeClass(tNav.currentParent, tNav.options.hoverClass);
			if(tNav.options.followLink) {
				window.location.href = tNav.currentElement.href;
			}
		} else {
			tNav.addClass(tNav.currentParent, tNav.options.hoverClass);
			tNav.activeParent = tNav.currentParent;
			return tNav.preventEvent(e);
		}
	},
	preventEvent: function(e) {
		if(!e) e = window.event;
		if(e.preventDefault) e.preventDefault();
		if(e.stopPropagation) e.stopPropagation();
		e.cancelBubble = true;
		return false;
	},
	isParent: function(parent, child) {
		while(child.parentNode) {
			if(child.parentNode == parent) {
				return true;
			}
			child = child.parentNode;
		}
		return false;
	},
	addHandler: function(object, event, handler) {
		if (typeof object.addEventListener != 'undefined') object.addEventListener(event, this.bind(handler,object), false);
		else if (typeof object.attachEvent != 'undefined') object.attachEvent('on' + event, this.bind(handler,object));
	},
	removeHandler: function(object, event, handler) {
		if (typeof object.removeEventListener != 'undefined') object.removeEventListener(event, handler, false);
		else if (typeof object.detachEvent != 'undefined') object.detachEvent('on' + event, handler);
	},
	hasClass: function(obj,cname) {
		return (obj.className ? obj.className.match(new RegExp('(\\s|^)'+cname+'(\\s|$)')) : false);
	},
	addClass: function(obj,cname) {
		if (!this.hasClass(obj,cname)) obj.className += " "+cname;
	},
	removeClass: function(obj,cname) {
		if (this.hasClass(obj,cname)) obj.className=obj.className.replace(new RegExp('(\\s|^)'+cname+'(\\s|$)'),' ');
	},
	bind: function(func, scope){
		return function() {
			return func.apply(scope, arguments);
		}
	}
}