var opt_expandFirstItemAutomatically = false;	// Expand first menu item automatically ?
var opt_initMenuIdToExpand = false;	// Id of menu item that should be initially expanded. the id is defined in the <li> tag.
var opt_expandMenuItemByUrl = true;	// Menu will automatically expand by url - i.e. if the href of the menu item is in the current location, it will expand


var opt_initMenuItemAlwaysExpanded = true;	// NOT IMPLEMENTED YET

var opt_slMenuObj;
var opt_divToScroll = false;
var opt_ulToScroll = false;
var opt_divCounter = 1;
var opt_otherDivsToScroll = new Array();
var opt_divToHide = false;
var opt_parentDivToHide = new Array();
var opt_ulToHide = false;
var opt_offsetOpera = 0;
if(navigator.userAgent.indexOf('Opera')>=0)opt_offsetOpera=1;
var opt_slideMenuHeightOfCurrentBox = 0;
var opt_objectsToExpand = new Array();
var opt_initExpandIndex = 0;
var opt_alwaysExpanedItems = new Array();

var dg_activeItem = null;

function opt_popMenusToShow()
{
	var obj = opt_divToScroll;
	var endArray = new Array();
	while(obj && obj.tagName!='BODY'){
		if(obj.tagName=='DIV' && obj.id.indexOf('slideDiv')>=0){
			var objFound = -1;
			for(var no=0;no<opt_otherDivsToScroll.length;no++){
				if(opt_otherDivsToScroll[no]==obj){
					objFound = no;
				}
			}
			if(objFound>=0){
				opt_otherDivsToScroll.splice(objFound,1);
			}
		}
		obj = obj.parentNode;
	}
}

function opt_showSubMenu(e,inputObj)
{

	if(this && this.tagName)inputObj = this.parentNode;

	if(inputObj && inputObj.tagName=='LI'){
		opt_divToScroll = inputObj.getElementsByTagName('DIV')[0];
		for(var no=0;no<opt_otherDivsToScroll.length;no++){
			if(opt_otherDivsToScroll[no]==opt_divToScroll)return;
		}
	}
	hidingInProcess = false;
	if(opt_otherDivsToScroll.length>0){
		if(opt_divToScroll){
			if(opt_otherDivsToScroll.length>0){
				opt_popMenusToShow();
			}
			if(opt_otherDivsToScroll.length>0){
				opt_autoHideMenus();
				hidingInProcess = true;
			}
		}
	}
	if(opt_divToScroll && !hidingInProcess){
		opt_divToScroll.style.display='';
		opt_otherDivsToScroll.length = 0;
		otherDivToScroll = opt_divToScroll.parentNode;
		opt_otherDivsToScroll.push(opt_divToScroll);
		while(otherDivToScroll && otherDivToScroll.tagName!='BODY'){
			if(otherDivToScroll.tagName=='DIV' && otherDivToScroll.id.indexOf('slideDiv')>=0){
				opt_otherDivsToScroll.push(otherDivToScroll);

			}
			otherDivToScroll = otherDivToScroll.parentNode;
		}
		opt_ulToScroll = opt_divToScroll.getElementsByTagName('UL')[0];
		if(opt_divToScroll.style.height.replace('px','')/1<=1)opt_scrollDownSub();
	}


	if(e || inputObj) {

		if(opt_activeItem) {
			opt_activeItem.className = opt_activeItem.className.replace('activeItem','');
		}
		var aTags = inputObj.getElementsByTagName('A');
		if(aTags.length>0) {
			aTags[0].className = aTags[0].className + ' activeItem';
			opt_activeItem = aTags[0];

		}

	}

	return true;

}



function opt_autoHideMenus()
{
	if(opt_otherDivsToScroll.length>0){
		opt_divToHide = opt_otherDivsToScroll[opt_otherDivsToScroll.length-1];
		opt_parentDivToHide.length=0;
		var obj = opt_divToHide.parentNode.parentNode.parentNode;
		while(obj && obj.tagName=='DIV'){
			if(obj.id.indexOf('slideDiv')>=0)opt_parentDivToHide.push(obj);
			obj = obj.parentNode.parentNode.parentNode;
		}
		var tmpHeight = (opt_divToHide.style.height.replace('px','')/1 - opt_slideMenuHeightOfCurrentBox);
		if(tmpHeight<0)tmpHeight=0;
		if(opt_slideMenuHeightOfCurrentBox)opt_divToHide.style.height = tmpHeight  + 'px';
		opt_ulToHide = opt_divToHide.getElementsByTagName('UL')[0];
		opt_slideMenuHeightOfCurrentBox = opt_ulToHide.offsetHeight;
		opt_scrollUpMenu();
	}else{
		opt_slideMenuHeightOfCurrentBox = 0;
		opt_showSubMenu();
	}
}


function opt_scrollUpMenu()
{

	var height = opt_divToHide.offsetHeight;
	height-=15;
	if(height<0)height=0;
	opt_divToHide.style.height = height + 'px';

	for(var no=0;no<opt_parentDivToHide.length;no++){
		opt_parentDivToHide[no].style.height = opt_parentDivToHide[no].getElementsByTagName('UL')[0].offsetHeight + 'px';
	}
	if(height>0){
		setTimeout('opt_scrollUpMenu()',5);
	}else{
		opt_divToHide.style.display='none';
		opt_otherDivsToScroll.length = opt_otherDivsToScroll.length-1;
		opt_autoHideMenus();
	}
}

function opt_scrollDownSub()
{
	if(opt_divToScroll){
		var height = opt_divToScroll.offsetHeight/1;
		var offsetMove =Math.min(15,(opt_ulToScroll.offsetHeight - height));
		height = height +offsetMove ;
		opt_divToScroll.style.height = height + 'px';

		for(var no=1;no<opt_otherDivsToScroll.length;no++){
			var tmpHeight = opt_otherDivsToScroll[no].offsetHeight/1 + offsetMove;
			opt_otherDivsToScroll[no].style.height = tmpHeight + 'px';
		}
		if(height<opt_ulToScroll.offsetHeight)setTimeout('opt_scrollDownSub()',5); else {
			opt_divToScroll = false;
			opt_ulToScroll = false;
			if(opt_objectsToExpand.length>0 && opt_initExpandIndex<(opt_objectsToExpand.length-1)){
				opt_initExpandIndex++;

				opt_showSubMenu(false,opt_objectsToExpand[opt_initExpandIndex]);
			}
		}
	}
}

function opt_initSubItems(inputObj,currentDepth)
{
	opt_divCounter++;
	var div = document.createElement('DIV');	// Creating new div
	div.style.overflow = 'hidden';
	div.style.position = 'relative';
	div.style.display='none';
	div.style.height = '1px';
	div.id = 'slideDiv' + opt_divCounter;
	div.className = 'slideMenuDiv' + currentDepth;
	inputObj.parentNode.appendChild(div);	// Appending DIV as child element of <LI> that is parent of input <UL>
	div.appendChild(inputObj);	// Appending <UL> to the div
	var menuItem = inputObj.getElementsByTagName('LI')[0];
	while(menuItem){
		if(menuItem.tagName=='LI'){
			var aTag = menuItem.getElementsByTagName('A')[0];
			aTag.className='slMenuItem_depth'+currentDepth;
			var subUl = menuItem.getElementsByTagName('UL');
			if(subUl.length>0){
				opt_initSubItems(subUl[0],currentDepth+1);
			}
			aTag.onclick = opt_showSubMenu;
		}
		menuItem = menuItem.nextSibling;
	}
}

function initOptionsSlideDownMenu()
{
	opt_slMenuObj = document.getElementById('options_slidedown_menu');
	opt_slMenuObj.style.visibility='visible';
	var mainUl = opt_slMenuObj.getElementsByTagName('UL')[0];
	var mainMenuItem = mainUl.getElementsByTagName('LI')[0];
	mainItemCounter = 1;
	while(mainMenuItem){
		if(mainMenuItem.tagName=='LI'){
			var aTag = mainMenuItem.getElementsByTagName('A')[0];
			aTag.className='slMenuItem_depth1';
			var subUl = mainMenuItem.getElementsByTagName('UL');
			if(subUl.length>0){
				mainMenuItem.id = 'mainMenuItem' + mainItemCounter;
				opt_initSubItems(subUl[0],2);
				aTag.onclick = opt_showSubMenu;
				mainItemCounter++;
			}
		}
		mainMenuItem = mainMenuItem.nextSibling;
	}

	if(location.search.indexOf('mainMenuItemToSlide')>=0){
		var items = location.search.split('&');
		for(var no=0;no<items.length;no++){
			if(items[no].indexOf('mainMenuItemToSlide')>=0){
				values = items[no].split('=');
				opt_showSubMenu(flase,document.getElementById('mainMenuItem' + values[1]));
				opt_initMenuIdToExpand = false;
			}
		}
	}else if(opt_expandFirstItemAutomatically>0){
		if(document.getElementById('mainMenuItem' + opt_expandFirstItemAutomatically)){
			opt_showSubMenu(false,document.getElementById('mainMenuItem' + opt_expandFirstItemAutomatically));
			opt_initMenuIdToExpand = false;
		}
	}

	if(opt_expandMenuItemByUrl)
	{
		var aTags = opt_slMenuObj.getElementsByTagName('A');
		for(var no=0;no<aTags.length;no++){
			var hrefToCheckOn = aTags[no].href;
			if(location.href.indexOf(hrefToCheckOn)>=0 && hrefToCheckOn.indexOf('#')<hrefToCheckOn.length-1){
				opt_initMenuIdToExpand = false;
				var obj = aTags[no].parentNode;
				while(obj && obj.id!='slidedown_menu'){
					if(obj.tagName=='LI'){
						var subUl = obj.getElementsByTagName('UL');
						if(opt_initMenuItemAlwaysExpanded)opt_alwaysExpanedItems[obj.parentNode] = true;
						if(subUl.length>0){
							opt_objectsToExpand.unshift(obj);
						}
					}
					obj = obj.parentNode;
				}
				opt_showSubMenu(false,opt_objectsToExpand[0]);
				break;
			}
		}
	}

	if(opt_initMenuIdToExpand)
	{
		opt_objectsToExpand = new Array();
		var obj = document.getElementById(opt_initMenuIdToExpand)
		while(obj && obj.id!='slidedown_menu'){
			if(obj.tagName=='LI'){
				var subUl = obj.getElementsByTagName('UL');
				if(opt_initMenuItemAlwaysExpanded)opt_alwaysExpanedItems[obj.parentNode] = true;
				if(subUl.length>0){
					opt_objectsToExpand.unshift(obj);
				}
			}
			obj = obj.parentNode;
		}

		opt_showSubMenu(false,opt_objectsToExpand[0]);

	}



}