/************************************************************************************************************
 (C) www.dhtmlgoodies.com, October 2005
 
 This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website. 
 
 Terms of use:
 You are free to use this script as long as the copyright message is kept intact. However, you may not
 redistribute, sell or repost it without our permission.
 
 Update log:
 
  March, 15th: Fixed problem with sliding in MSIE
 
 Thank you!
 
 www.dhtmlgoodies.com
 Alf Magne Kalleland
 
 ************************************************************************************************************/ 
//var expandFirstItemAutomatically = true; // Expand first menu item automatically ?
expandFirstItemAutomatically=menuselect;
var initMenuIdToExpand = true; // Id of menu item that should be initially expanded. the id is defined in the <li> tag.
var 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 initialMenuItemAlwaysExpanded = true; 

var dhtmlgoodies_slmenuObj;
var divToScroll = false;
var ulToScroll = false; 
var divCounter = 1;
var otherDivsToScroll = new Array();
var divToHide = false;
var parentDivToHide = new Array();
var ulToHide = false;
var offsetOpera = 0;
if(navigator.userAgent.indexOf('Opera')>=0)offsetOpera=1; 
var slideMenuHeightOfCurrentBox = 0;
var objectsToExpand = new Array();
var initExpandIndex = 0;
var alwaysExpanedItems = new Array();
var currentmenuitem=0; 
 
function popMenusToShow(){
	var obj = 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<otherDivsToScroll.length;no++){
				if(otherDivsToScroll[no]==obj){
					objFound = no;
				}
			}
			
			if(objFound>=0){
				otherDivsToScroll.splice(objFound,1); 
			}
  		}
  		obj = obj.parentNode;
 	} 
}

function showSubMenu(e,inputObj){
	if(this && this.tagName)inputObj = this.parentNode;
	
	if(inputObj && inputObj.tagName=='LI'){
		divToScroll = inputObj.getElementsByTagName('DIV')[0];
		
		for(var no=0;no<otherDivsToScroll.length;no++){
			if(otherDivsToScroll[no]==divToScroll)return;
		}
 	}
	
	hidingInProcess = false;
	
	if(otherDivsToScroll.length>0){
		
		if(divToScroll){    
			if(otherDivsToScroll.length>0){
    			popMenusToShow();
   			}
   			if(otherDivsToScroll.length>0){ 
    			autoHideMenus();
    			hidingInProcess = true;
   			}
  		} 
 	}  
 	if(divToScroll && !hidingInProcess){
		divToScroll.style.display='';
		otherDivsToScroll.length = 0;
		otherDivToScroll = divToScroll.parentNode;
		otherDivsToScroll.push(divToScroll); 
  		
		while(otherDivToScroll && otherDivToScroll.tagName!='BODY'){
			if(otherDivToScroll.tagName=='DIV' && otherDivToScroll.id.indexOf('slideDiv')>=0){
    			otherDivsToScroll.push(otherDivToScroll);
   			}
   			otherDivToScroll = otherDivToScroll.parentNode;
  		}   
  		ulToScroll = divToScroll.getElementsByTagName('UL')[0];
  		if(divToScroll.style.height.replace('px','')/1<=1)scrollDownSub();
	}
	
}



function autoHideMenus(){

	if(otherDivsToScroll.length>0){
		divToHide = otherDivsToScroll[otherDivsToScroll.length-1];
		parentDivToHide.length=0;
		var obj = divToHide.parentNode.parentNode.parentNode;
		while(obj && obj.tagName=='DIV'){   
   			if(obj.id.indexOf('slideDiv')>=0)parentDivToHide.push(obj);
   			obj = obj.parentNode.parentNode.parentNode;
		}
		var tmpHeight = (divToHide.style.height.replace('px','')/1 - slideMenuHeightOfCurrentBox);
		if(tmpHeight<0)tmpHeight=0;
		if(slideMenuHeightOfCurrentBox)divToHide.style.height = tmpHeight  + 'px';
		ulToHide = divToHide.getElementsByTagName('UL')[0];
		slideMenuHeightOfCurrentBox = ulToHide.offsetHeight;
		scrollUpMenu();  
 	}else{
  		slideMenuHeightOfCurrentBox = 0;
  		showSubMenu();   
 	}
}


function scrollUpMenu(){
	var height = divToHide.offsetHeight;
	height-=15;
	if(height<0)height=0;
	divToHide.style.height = height + 'px';

 	for(var no=0;no<parentDivToHide.length;no++){ 
  		parentDivToHide[no].style.height = parentDivToHide[no].getElementsByTagName('UL')[0].offsetHeight + 'px';
 	}
 	
	if(height>0){
  		setTimeout('scrollUpMenu()',5);
 	}else{
		divToHide.style.display='none';
		otherDivsToScroll.length = otherDivsToScroll.length-1;
		autoHideMenus();   
 	}
} 

function scrollDownSub(){
	
	if(divToScroll){   
		var height = divToScroll.offsetHeight/1;
		var offsetMove =Math.min(15,(ulToScroll.offsetHeight - height));
		height = height +offsetMove ;
		divToScroll.style.height = height + 'px';
		
		for(var no=1;no<otherDivsToScroll.length;no++){
			var tmpHeight = otherDivsToScroll[no].offsetHeight/1 + offsetMove;
			otherDivsToScroll[no].style.height = tmpHeight + 'px';
		}   
		if(height<ulToScroll.offsetHeight)setTimeout('scrollDownSub()',5); else {
			divToScroll = false;
			ulToScroll = false;
			if(objectsToExpand.length>0 && initExpandIndex<(objectsToExpand.length-1)){
				initExpandIndex++;
				
				showSubMenu(false,objectsToExpand[initExpandIndex]);
			}
		}
	}
}
 
function initSubItems(inputObj,currentDepth){  
	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' + 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];
	var i=0;
	
	
	currentmenuitem=currentmenuitem+1;
	
	while(menuItem){
	
		if(menuItem.tagName=='LI'){
			var aTag = menuItem.getElementsByTagName('A')[0];
			//aTag.className='slMenuItem_depth'+currentDepth; 
			i=i+1;
			if (i==submenuselect && currentmenuitem==menuselect){
				//aTag.className='selected'; 
			}
			var subUl = menuItem.getElementsByTagName('UL');
			if(subUl.length>0){
				initSubItems(subUl[0],currentDepth+1);     
			}
			aTag.onclick = showSubMenu;    
		}   
		menuItem = menuItem.nextSibling;      
	}  
}


function initSlideDownMenu(){
	
	dhtmlgoodies_slmenuObj = document.getElementById('slidedown_menu');
	dhtmlgoodies_slmenuObj.style.visibility='visible';
	
	var mainUl = dhtmlgoodies_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;
				initSubItems(subUl[0],2);
				aTag.onclick = 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('=');
				showSubMenu(false,document.getElementById('mainMenuItem' + values[1])); 
				initMenuIdToExpand = false;    
			}
		}
	}else if(expandFirstItemAutomatically>0){
		if(document.getElementById('mainMenuItem' + expandFirstItemAutomatically)){
			showSubMenu(false,document.getElementById('mainMenuItem' + expandFirstItemAutomatically));
			initMenuIdToExpand = false;
		}
	}

 	if(expandMenuItemByUrl){
  		var aTags = dhtmlgoodies_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){
    			initMenuIdToExpand = false;
    			var obj = aTags[no].parentNode;
    			
				while(obj && obj.id!='slidedown_menu'){
    				if(obj.tagName=='LI'){       
      					var subUl = obj.getElementsByTagName('UL');
      					if(initialMenuItemAlwaysExpanded)alwaysExpanedItems[obj.parentNode] = true;
      					
						if(subUl.length>0){        
       						objectsToExpand.unshift(obj);
      					}
     				}
     				obj = obj.parentNode; 
    			}
    			showSubMenu(false,objectsToExpand[0]);
   				break;     
   			}   
  		}
 	}
   
 	if(initMenuIdToExpand){
  		objectsToExpand = new Array();
  		var obj = document.getElementById(initMenuIdToExpand)
  		
		while(obj && obj.id!='slidedown_menu'){
   			
			if(obj.tagName=='LI'){
    			var subUl = obj.getElementsByTagName('UL');
    			if(initialMenuItemAlwaysExpanded)alwaysExpanedItems[obj.parentNode] = true;
    			if(subUl.length>0){      
     				objectsToExpand.unshift(obj);
    			}
   			}
   			obj = obj.parentNode; 
  		}
  
  		showSubMenu(false,objectsToExpand[0]);

 	}
 

  
}

window.onload = initSlideDownMenu;