// Dieses Script basiert auf dem Code mit Dank von Dean Parkinson 



/***
*       A huge thanks to Dean Parkinson for the help with this widget
*/
/************************************************************************************************************
@fileoverview
Slide out menu
Copyright (C) 2007  Dean Parkinson

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

Alf Magne Kalleland, 2007
Owner of DHTMLgoodies.com
************************************************************************************************************/

var glob_MenuDivID = 'hauptmenu_links';
var glob_Submenu_Class = 'hauptmenu_sub_links';
var glob_MenuItems;
var glob_SlideSpeed_Out = 10;	// Steps to move sub menu at a time ( higher = faster)
var glob_SlideSpeed_In = 10;
var glob_DelayMenuClose = 350;	// Microseconds from mouseout to close of menu
var glob_SlideTimeout_Out = 0;	// Microseconds between slide steps ( lower = faster)
//var glob_SlideTimeout_In = 0;	// Microseconds between slide steps ( lower = faster)
var glob_XOffsetSubMenu = 0; 	// Offset x-position of sub menu items - use negative value if you want the sub menu to overlap main menu

/* Don't change anything below here */

var indeces = new Array();
indeces[0] = 0;
var isMSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;
var browserVersion = parseInt(navigator.userAgent.replace(/.*?MSIE ([0-9]+?)[^0-9].*/g,'$1'));
if(!browserVersion)browserVersion=1;

function mouseOn(obj) 
{
	var mi = findNode(getSearchIdFromObj(obj));
	if (mi)
		mi.mouseOn();
}

function mouseOff(obj) 
{
	var mi = findNode(getSearchIdFromObj(obj));
	if (mi) 
		mi.mouseOff();
}

function getSearchIdFromObj(obj)
{
	// pull the postfix off the A link or LI tag id and return the menu item ID
	var objId = obj.id;
	var idx = objId.indexOf('_');
	if (idx>=0)
	{
		return "MenuItem" + objId.substring(idx);
	}
	return null;
}

function slideChildMenu(aId) 
{
	var mi = findNode(aId);
	if (mi) mi.slideChildMenu();
}

function findNode(searchId) 
{
	var result;
	for (var no=0;no<glob_MenuItems.length;no++)
	{
		result = glob_MenuItems[no].findNode(searchId);
		if (result) return result;
	}
	return null;
}

function getNextIndex(lvl)
{
	var result = 0;
	if (indeces.length<=lvl) 
	{
		indeces[lvl] = 1;
	} 
	else
	{
		result = indeces[lvl];
		indeces[lvl]++;
	}
	return result;
}

function MenuItem(divref, ulref, liref, lvlnum, parentref)
{
	this.parent = parentref;
	this.div = divref;
	this.ul = ulref;
	this.width = this.ul.offsetWidth;
	// this.left = div.style.left.replace(/[^0-9]/g,'');
	this.li = liref;
	this.alink = this.li.getElementsByTagName('A')[0];
	this.lvl = lvlnum;
	this.idx = getNextIndex(this.lvl);
	this.children;
	this.subUL = this.li.getElementsByTagName('UL')[0];
	this.children;
	this.isMouseOnMe = false;
	// note: if !isOpen && !isClosed then I am animating a slide
	this.isChildMenuOpen = false;
	this.isChildMenuClosed = true;

	// Constructor
	// if a node does not have an A tag but it's children do then we need
	// null out this node's alink field...
	if (this.alink) 
	{
		if (this.alink.parentNode!=this.li) 
			this.alink = null;
	}
	if (this.subUL)
	{
		this.subUL.style.display = '';

		this.children = new Array();
		var subLI = this.subUL.getElementsByTagName('LI')[0];
				
		while(subLI)
		{
			if(subLI.tagName && subLI.tagName.toLowerCase()=='li')
			{
				this.children[this.children.length] = new MenuItem(null, this.subUL, subLI, this.lvl + 1, this);
			}
			subLI = subLI.nextSibling;
		}
	}

	this.getPostfix = function() 
	{
		return '_' + this.idx + '_' + this.lvl;
	}
	
	this.getId = function() 
	{
		return "MenuItem" + this.getPostfix();
	}

	this.hasChildren = function() 
	{
	    if (this.children!=null)
		    return (this.children[0]!=null);
	    else
	        return false;
	}

	this.getTopPos = function() 
	{
		var origDisp = this.div.style.display;
		this.div.style.display = "";
		var obj = this.li;
		var result = obj.offsetTop;
		while((obj = obj.offsetParent) != null) 
			result += obj.offsetTop;
		this.div.style.display = origDisp;
		return result;
	}

	this.getLeftPos = function() 
	{
		var origDisp = this.div.style.display;
		this.div.style.display = "";
		var obj = this.li;
		var result = obj.offsetLeft;
		while((obj = obj.offsetParent) != null)
			result += obj.offsetLeft;
		this.div.style.display = origDisp;
		return result;
	}

	this.renderNode = function() 
	{
		// set node properties
		this.li.id = "menuItemLI" + this.getPostfix();
		this.ul.style.position = "relative";
		
		if (this.alink) 
		{
			this.alink.id = "menuItemA" + this.getPostfix();
			this.alink.onmouseover = function() {mouseOn(this);};
			this.alink.onmouseout = function() {mouseOff(this);};
		} 
		else 
		{
			this.li.onmouseover = function() {mouseOn(this);};
			this.li.onmouseout = function() {mouseOff(this);};
		}

		// set sub-menu nodes
		if (this.hasChildren()) 
		{
			var mi = this.children[0];
			var subdiv = document.createElement('DIV');
			subdiv.className=glob_Submenu_Class;
			document.body.appendChild(subdiv);
			subdiv.id = "menuItemDIV" + mi.getPostfix();
			this.subUL.id = "menuItemUL" + mi.getPostfix();
			subdiv.appendChild(this.subUL);
			subdiv.style.left = this.getLeftPos() + (this.width / 1.5) + glob_XOffsetSubMenu + 'px';
			subdiv.style.top = this.getTopPos() + 'px';
			subdiv.style.visibility = "hidden";
			subdiv.style.display = "none";
			subdiv.style.zindex = "1000";
			for (var no=0;no<this.children.length;no++) 
			{
				var mi = this.children[no];
				mi.div = subdiv;
				mi.renderNode();
			}
		}
		return this.li;
	}

	this.findNode = function(searchId)
	{
		var result;
		if (this.getId() == searchId) 
		{
			result = this;
		} 
		else 
		{
			if (this.hasChildren()) 
			{
				for (var no=0;no<this.children.length;no++)
				{
					var mi = this.children[no];
					result = mi.findNode(searchId);
					if (result!=null) 
						break;
				}
			}
		}
		return result;
	}

	this.mouseOn = function() 
	{
		this.isMouseOnMe = true;
		if (this.hasChildren() && this.isChildMenuClosed) 
		{
			this.initiateChildMenuOpen();
		}
	}

	this.mouseOff = function() 
	{
		this.isMouseOnMe = false;
		if (this.hasChildren() && !this.isChildMenuClosed) 
		{
			this.initiateChildMenuClose();
		} 
		else if (this.parent) 
		{
			this.parent.mouseOff();
		}
	}

	this.isMouseOnChild = function()
	{
		if (this.isMouseOnMe) 
			return true;
		if (this.hasChildren()) 
		{
			for (var no=0;no<this.children.length;no++) 
			{
				if (this.children[no].isMouseOnChild()) 
					return true;
			}
		}
		return false;
	}

	this.initiateChildMenuOpen = function() 
	{
		this.isChildMenuClosed = false;
		var childDiv = this.children[0].div;
		
		childDiv.style.width = "0px";
		childDiv.style.visibility = "visible";
		childDiv.style.display = "";
		this.slideChildMenu();
	}

	this.initiateChildMenuClose = function() 
	{
		this.isChildMenuOpen = false;
		// we have to wait to close the menu
		// allow the mouse to navigate over the child menu
		setTimeout("slideChildMenu('" + this.getId() + "')", glob_DelayMenuClose);
	}

	this.slideChildMenu = function() 
	{
		var divref = this.children[0].div;
		var ulref = this.children[0].ul;
		var maxwidth = this.children[0].width  + 25;
		var nextWidth;
		
		if (this.isMouseOnMe  || this.isMouseOnChild()) 
		{
			nextWidth = divref.offsetWidth + glob_SlideSpeed_Out;
			if (nextWidth >= maxwidth)
			{
				this.finishOpeningChild(divref, ulref, maxwidth);
			} 
			else 
			{
				ulref.style.left = nextWidth - maxwidth + "px";
				divref.style.width = nextWidth + "px";
				setTimeout("slideChildMenu('" + this.getId() + "')", glob_SlideTimeout_Out);
			}
		}
		else 
		{
			nextWidth = divref.offsetWidth - glob_SlideSpeed_In;
			if (nextWidth <= 0)
			{
				this.finishClosingChild(divref, ulref, maxwidth);
			}
			else 
			{
				ulref.style.left = nextWidth - maxwidth + "px";
				divref.style.width = nextWidth + "px";
				setTimeout("slideChildMenu('" + this.getId() + "')", glob_SlideTimeout_Out);
			}
		}
	}

	this.finishOpeningChild = function(divref, ulref, maxwidth)
	{
		this.isChildMenuOpen = true;
		this.isChildMenuClosed = false;
		ulref.style.left = "0px";
		divref.style.width = maxwidth+ "px";
	}

	this.finishClosingChild = function(divref, ulref, maxwidth) 
	{
		this.isChildMenuOpen = false;
		this.isChildMenuClosed = true;
		divref.style.visibility = "hidden";
		divref.style.display = "none";
		divref.style.width = maxwidth + "px";
		if (this.parent)
			this.parent.mouseOff();
	}

}

function collectMenuNodes(menuObj)
{
     if (menuObj == null)
        return null;

     var results = new Array();
     var menuUL = menuObj.getElementsByTagName('UL')[0];
     if (menuUL == null)
        return null;
     var menuLI = menuUL.getElementsByTagName('LI')[0];
     if (menuLI == null)
        return null;
        
     while(menuLI) 
	 {
        if(menuLI.tagName && menuLI.tagName.toLowerCase()=='li') 
		{
              results[results.length] = new MenuItem(menuObj, menuUL, menuLI, 0, null);
        }
        menuLI = menuLI.nextSibling;
     }
     return results;
}

function init()
{
	var mainDiv = document.getElementById(glob_MenuDivID);
	glob_MenuItems = collectMenuNodes(mainDiv);
	if (glob_MenuItems)
	{
		for (var no=0;no<glob_MenuItems.length;no++)
		{
			var mi = glob_MenuItems[no];
			mi.renderNode();
		}
		mainDiv.style.visibility = 'visible';
	}
	// window.onresize = resetPosition;
}