var navObj;   // Reference to the menu div
var currentZIndex = 1000;
var liIndex = 0;
var visibleMenus = new Array();
var activeMenuItem = false;
var timeBeforeAutoHide = 500; // Microseconds from mouse leaves menu to auto hide.
var nav_arrow = '/images/arrow.gif';

var MSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;
var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox')>=0?true:false;
var navigatorVersion = navigator.appVersion.replace(/.*?MSIE ([0-9]\.[0-9]).*/g,'$1')/1;
var menuBlockArray = new Array();
var menuParentOffsetLeft = false;


// {{{ getStyle()
/**
* Return specific style attribute for an element
*
* @param Object el = Reference to HTML element
* @param String property = Css property
* @private
*/
function getStyle(el,property)
{

	if (document.defaultView && document.defaultView.getComputedStyle) {

		var retVal = null;
		var comp = document.defaultView.getComputedStyle(el, '');
		if (comp){
			retVal = comp[property];

			if(!retVal){
				var comp = document.defaultView.getComputedStyle(el, null);
				retVal = comp.getPropertyCSSValue(property);
			}
		}

		if(retVal==null)retVal='';

		return el.style[property] || retVal;
	}
	if (document.documentElement.currentStyle && MSIE){
		var value = el.currentStyle ? el.currentStyle[property] : null;
		return ( el.style[property] || value );

	}
	return el.style[property];
}

function getTopPos(inputObj)
{
	var origInputObj = inputObj;

	var returnValue = inputObj.offsetTop;
	if(inputObj.tagName=='LI' && inputObj.parentNode.className=='menuBlock1'){
		var aTag = inputObj.getElementsByTagName('A')[0];
		if(aTag)returnValue += aTag.parentNode.offsetHeight;
	}
	var topOfMenuReached = false;
	while((inputObj = inputObj.offsetParent) != null){
		if(inputObj.parentNode.id=='nav')topOfMenuReached=true;
		if(topOfMenuReached && !inputObj.className.match(/menuBlock/gi) || (!MSIE && origInputObj.parentNode.className=='menuBlock1')){
			var style = getStyle(inputObj,'position');
			if(style=='absolute' || style=='relative'){
				return returnValue;
			}
		}

		returnValue += inputObj.offsetTop;
	}

	return returnValue;
}

function getLeftPos(inputObj)
{
	var returnValue = inputObj.offsetLeft;

	var topOfMenuReached = false;
	while((inputObj = inputObj.offsetParent) != null){
		if(inputObj.parentNode.id=='nav')topOfMenuReached=true;
		if(topOfMenuReached && !inputObj.className.match(/menuBlock/gi)){
			var style = getStyle(inputObj,'position');
			if(style=='absolute' || style=='relative')return returnValue;
		}

		returnValue += inputObj.offsetLeft;
	}
	return returnValue;
}



function showHideSub()
{

	var attr = this.parentNode.getAttribute('currentDepth');
	if(navigator.userAgent.indexOf('Opera')>=0){
		attr = this.parentNode.currentDepth;
	}

	this.className = 'currentDepth' + attr + 'over';

	if(activeMenuItem && activeMenuItem!=this){
		activeMenuItem.className=activeMenuItem.className.replace(/over/,'');
	}
	activeMenuItem = this;

	var numericIdThis = this.id.replace(/[^0-9]/g,'');
	var exceptionArray = new Array();
	// Showing sub item of this LI
	var sub = document.getElementById('subOf' + numericIdThis);
	if(sub){
		visibleMenus.push(sub);
		sub.style.display='';
		sub.parentNode.className = sub.parentNode.className + 'over';
		exceptionArray[sub.id] = true;
	}

	// Showing parent items of this one

	var parent = this.parentNode;
	while(parent && parent.id && parent.tagName=='UL'){
		visibleMenus.push(parent);
		exceptionArray[parent.id] = true;
		parent.style.display='';

		var li = document.getElementById('xxx' + parent.id.replace(/[^0-9]/g,''));
		if(li.className.indexOf('over')<0)li.className = li.className + 'over';
		parent = li.parentNode;

	}


	hideMenuItems(exceptionArray);



}

function hideMenuItems(exceptionArray)
{
	/*
	Hiding visible menu items
	*/
	var newVisibleMenuArray = new Array();
	for(var no=0;no<visibleMenus.length;no++){
		if(visibleMenus[no].className!='menuBlock1' && visibleMenus[no].id){
			if(!exceptionArray[visibleMenus[no].id]){
				var el = visibleMenus[no].getElementsByTagName('A')[0];
				visibleMenus[no].style.display = 'none';
				var li = document.getElementById('xxx' + visibleMenus[no].id.replace(/[^0-9]/g,''));
				if(li.className.indexOf('over')>0)li.className = li.className.replace(/over/,'');
			}else{
				newVisibleMenuArray.push(visibleMenus[no]);
			}
		}
	}
	visibleMenus = newVisibleMenuArray;
}



var menuActive = true;
var hideTimer = 0;
function mouseOverMenu()
{
	menuActive = true;
}

function mouseOutMenu()
{
	menuActive = false;
	timerAutoHide();
}

function timerAutoHide()
{
	if(menuActive){
		hideTimer = 0;
		return;
	}

	if(hideTimer<timeBeforeAutoHide){
		hideTimer+=100;
		setTimeout('timerAutoHide()',99);
	}else{
		hideTimer = 0;
		autohideMenuItems();
	}
}

function autohideMenuItems()
{
	if(!menuActive){
		hideMenuItems(new Array());
		if(activeMenuItem)activeMenuItem.className=activeMenuItem.className.replace(/over/,'');
	}
}


function initSubMenus(inputObj,initOffsetLeft,currentDepth)
{
	var subUl = inputObj.getElementsByTagName('UL');
	if(subUl.length>0){
		var ul = subUl[0];

		ul.id = 'subOf' + inputObj.id.replace(/[^0-9]/g,'');
		ul.setAttribute('currentDepth' ,currentDepth);
		ul.currentDepth = currentDepth;
		ul.className='menuBlock' + currentDepth;
		ul.onmouseover = mouseOverMenu;
		ul.onmouseout = mouseOutMenu;
		currentZIndex+=1;
		ul.style.zIndex = currentZIndex;
		menuBlockArray.push(ul);
		ul = navObj.appendChild(ul);
		var topPos = getTopPos(inputObj);
		var leftPos = getLeftPos(inputObj)/1 + initOffsetLeft/1;

		ul.style.position = 'absolute';
		ul.style.left = leftPos + 'px';
		ul.style.top = topPos + 'px';
		var li = ul.getElementsByTagName('LI')[0];
		while(li){
			if(li.tagName=='LI'){
				li.className='currentDepth' + currentDepth;
				li.id = 'xxx' + liIndex;
				liIndex++;
				var uls = li.getElementsByTagName('UL');
				li.onmouseover = showHideSub;

				if(uls.length>0){
					var offsetToFunction = li.getElementsByTagName('A')[0].offsetWidth+2;
					if(navigatorVersion<6 && MSIE)offsetToFunction+=15;   // MSIE 5.x fix
					initSubMenus(li,offsetToFunction,(currentDepth+1));
				}
				if(MSIE){
					var a = li.getElementsByTagName('A')[0];
					a.style.width=li.offsetWidth+'px';
					a.style.display='block';
					//a.style.styleFloat = 'left';
				}
			}
			li = li.nextSibling;
		}
		ul.style.display = 'none';
		if(!document.all){
			//navObj.appendChild(ul);
		}
	}
}


function resizeMenu()
{
	var offsetParent = getLeftPos(navObj);

	for(var no=0;no<menuBlockArray.length;no++){
		var leftPos = menuBlockArray[no].style.left.replace('px','')/1;
		menuBlockArray[no].style.left = leftPos + offsetParent - menuParentOffsetLeft + 'px';
	}
	menuParentOffsetLeft = offsetParent;
}

/*
Initializing menu
*/
function initDhtmlGoodiesMenu()
{
	navObj = document.getElementById('nav');


	var aTags = navObj.getElementsByTagName('A');
	for(var no=0;no<aTags.length;no++){

		var subUl = aTags[no].parentNode.getElementsByTagName('UL');
		if(subUl.length>0 && aTags[no].parentNode.parentNode.parentNode.id != 'nav'){
			var img = document.createElement('IMG');
			img.src = nav_arrow;
			aTags[no].appendChild(img);

		}

	}

	var mainMenu = navObj.getElementsByTagName('UL')[0];
	mainMenu.className='menuBlock1';
	mainMenu.style.zIndex = currentZIndex;
	mainMenu.setAttribute('currentDepth' ,1);
	mainMenu.currentDepth = '1';
	mainMenu.onmouseover = mouseOverMenu;
	mainMenu.onmouseout = mouseOutMenu;

	var mainMenuItemsArray = new Array();
	var mainMenuItem = mainMenu.getElementsByTagName('LI')[0];
	mainMenu.style.height = mainMenuItem.offsetHeight + 2 + 'px';
	while(mainMenuItem){

		mainMenuItem.className='currentDepth1';
		mainMenuItem.id = 'xxx' + liIndex;
		mainMenuItem.onmouseover = showHideSub;
		liIndex++;
		if(mainMenuItem.tagName=='LI'){
			mainMenuItem.style.cssText = 'float:left;';
			mainMenuItem.style.styleFloat = 'left';
			mainMenuItemsArray[mainMenuItemsArray.length] = mainMenuItem;
			initSubMenus(mainMenuItem,0,2);
		}

		mainMenuItem = mainMenuItem.nextSibling;

	}

	for(var no=0;no<mainMenuItemsArray.length;no++){
		initSubMenus(mainMenuItemsArray[no],0,2);
	}

	menuParentOffsetLeft = getLeftPos(navObj);
	window.onresize = resizeMenu;
	navObj.style.visibility = 'visible';
}