/* =================================================================================================
* (mt) Media Temple DropDown
*
* Javascript library responsible for the semi-transparent multi-level dropdown menus on the 
* (mt) Media Temple website.
*
* Copyright 2003, Aaron Boodman (aaron@youngpup.net)
* =================================================================================================
* "Can I use this?"
* 
* Use of this library is governed by the Creative Commons Attribution-NonCommercial-ShareAlike 1.0
* License. You can check it out at: http://creativecommons.org/licenses/by-nc-sa/1.0
*
* Basically:
* - You may copy, distribute, and eat this code as you wish. But you must give me credit for 
* writing it. You may not misrepresent yourself as the author of this code.
* - You may not use this code in a commercial setting without prior consent from me.
* - If you make changes to this code, you must make the changes available under a license like
* this one.
* =================================================================================================
* "It's kinda hard to read, though"
*
* The uncompressed, commented version of this script can be found at: 
* http://youngpup.net/code/mtDropDowns
* ============================================================================================== */


openedMenuSets = [];
currentActuator = null;
mouseIsOnDropDownSet = false;
/*MLO: 
* NOTE: an actuator is for example a div that contains a javascript flyout-menu *

openedMenuSets: Array with all the opened MenuSets
currentActuator: ID of the current actuator
mouseIsOnDropDownSet: true if mouse is still on one of the elements of the currently open menu
*/


mtDropDown.spacerGif = ""; //"images/menu/x.gif"; 
mtDropDown.dingbatOn = "images/menu/expand-1.gif"; 
mtDropDown.dingbatOff = "images/menu/expand-0.gif"; 
mtDropDown.dingbatSize = 14; 
mtDropDown.menuPadding = 1; 
mtDropDown.itemPadding = 3; 
mtDropDown.shadowSize = 2; 
mtDropDown.shadowOffset = 3; 
mtDropDown.shadowColor = "#888"; 
mtDropDown.shadowPng = "images/menu/grey-40.png"; 
mtDropDown.backgroundColor = "white"; 
mtDropDown.backgroundPng = "images/menu/white-90.png"; 
mtDropDown.hideDelay = 100; 
mtDropDown.slideTime = 200; 



mtDropDown.reference = {topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
mtDropDown.direction = {down:1,right:2};
mtDropDown.registry = [];
mtDropDown._maxZ = 100;




mtDropDown.isSupported = function()
{
	if (typeof mtDropDown.isSupported.r == "boolean") 
		return mtDropDown.isSupported.r;
	var ua = navigator.userAgent.toLowerCase();
	var an = navigator.appName;
	var r = false;
	if (ua.indexOf("gecko") > -1)
		r = true; 
	else if (an == "Microsoft Internet Explorer")
	{
		if (document.getElementById) r = true; 
	}
	mtDropDown.isSupported.r = r;
	return r;
}

mtDropDown.initialize = function() 
{
	for (var i = 0, menu = null; menu = this.registry[i]; i++)
	{
		menu.initialize();
	}
}

mtDropDown.renderAll = function()
{
	var aMenuHtml = [];
	for (var i = 0, menu = null; menu = this.registry[i]; i++)
	{
		aMenuHtml[i] = menu.toString();
	}
	document.write(aMenuHtml.join(""));
}





function mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentMenuSet) 
{
	this.addItem = addItem;
	this.addMenu = addMenu;
	this.toString = toString;
	this.initialize = initialize;
	this.isOpen = false;
	this.show = show;
	this.hide = hide;
	this.items = [];

	this.onactivate = new Function(); 
	this.ondeactivate = new Function(); 
	this.onmouseover = new Function(); 
	this.onqueue = new Function(); 

	this.index = mtDropDown.registry.length;
	mtDropDown.registry[this.index] = this;
	var id = "mtDropDown" + this.index;
	var contentHeight = null;
	var contentWidth = null;
	var childMenuSet = null;
	var animating = false;
	var childMenus = [];
	var slideAccel = -1;
	var elmCache = null;
	var ready = false;
	var _this = this;
	var a = null;
	var pos = iDirection == mtDropDown.direction.down ? "top" : "left"; //right
	var dim = null;

	function addItem(sText, sUrl, sColor) 
	{
		var item = new mtDropDownItem("> "+sText, sUrl, this, sColor);
		item._index = this.items.length;
		this.items[item._index] = item;
	}
	
	function addMenu(oMenuItem) 
	{
		if (!oMenuItem.parentMenu == this)
			throw new Error("Cannot add a menu here");
		if (childMenuSet == null)
			childMenuSet = new mtDropDownSet(mtDropDown.direction.right, 0, 0, mtDropDown.reference.topRight);//-5, 2
		var m = childMenuSet.addMenu(oMenuItem);
		childMenus[oMenuItem._index] = m;
		m.onmouseover = child_mouseover;
		m.ondeactivate = child_deactivate;
		m.onqueue = child_queue;
		return m;
	}
	
	function initialize() 
	{
		initCache();
		initEvents();
		initSize();
		ready = true;
	}
	
	function show() 
	{
		if (ready)
		{
			_this.isOpen = true;
			animating = true;
			setContainerPos();
			elmCache["clip"].style.visibility = "visible";
			elmCache["clip"].style.zIndex = mtDropDown._maxZ++;

			slideStart();
			_this.onactivate();
		}
	}
	
	function hide() 
	{
		if (ready) 
		{
			_this.isOpen = false;
			animating = true;
			for (var i = 0, item = null; item = elmCache.item[i]; i++) 
				dehighlight(item);
			
			if (childMenuSet) 
				childMenuSet.hide();
		
			slideStart();
			_this.ondeactivate();
		}
	}

	function setContainerPos()
	{
		var sub = oActuator.constructor == mtDropDownItem;
		var act = sub ? (navigator.userAgent.indexOf("Macintosh")>0 ? oActuator.parentMenu.elmCache["item"][oActuator._index].cells[0] : oActuator.parentMenu.elmCache["item"][oActuator._index]) : oActuator; 
		var el = act;
		var x = 0;//-30;
		var y = 0;
		
		var isFirefox = (navigator.userAgent.indexOf("Firefox/") >0 );
		var minX = 0;
		var maxX = (window.innerWidth ? window.innerWidth : document.body.clientWidth) - parseInt(elmCache["clip"].style.width);
		var minY = 0;
		var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);
		//alert("el_offset="+el.offsetLeft + " / cliip.with=" + parseInt(elmCache["clip"].style.width) + " act=" + act.offsetLeft);
		//alert(parseInt(elmCache["clip"].style.height));

		/* 19.10.2007 MLO: commented, because forbo-redesign should have menus from "left to right" instead of "right to left"
			if (iDirection==1) //if it is a downmenu make normal stuff
				x=0;
			else //make special for right-open-menus 
			{
				if ( navigator.appName == "Microsoft Internet Explorer") //internet explorer

					x=0- parseInt(elmCache["clip"].style.width)+3; //pbu: this is needed if stuff is in table and we want rightscrolling
				else //mozilla netscape
					x=0- parseInt(elmCache["clip"].style.width)-14; //pbu: this is needed if stuff is in table and we want rightscrolling

				//18.3.05 - 3po can move menu to other positions with variable globaly
				try
				{
				//y+=extraY;			
				}
				catch(e){}
			}
		*/

		while (sub ? el.parentNode.className.indexOf("mtDropdownMenu") == -1 : el.offsetParent)
		{
			//modify that the right-scrolling works
			//pbu 13.12.2003
			x += el.offsetLeft;//- parseInt(elmCache["clip"].style.width)  	;
			y += el.offsetTop;
			 
			if (el.scrollLeft) x -= el.scrollLeft;
			if (el.scrollTop) y -= el.scrollTop;
			el = el.offsetParent;
		}
	
		if (oActuator.constructor == mtDropDownItem)
		{
			x += parseInt(el.parentNode.style.left);
			y += parseInt(el.parentNode.style.top);
		}

		switch (iReferencePoint)
		{
			case mtDropDown.reference.topLeft:
				if (isFirefox) x-=16;
				break;
			case mtDropDown.reference.topRight:
				x += act.offsetWidth;
				break;
			case mtDropDown.reference.bottomLeft:
				y += act.offsetHeight;
				break;
			case mtDropDown.reference.bottomRight:
				x += act.offsetWidth;
				y += act.offsetHeight;
				break;
		}

		x += iLeft;
		y += iTop;
		x = Math.max(Math.min(x, maxX), minX);
		
		//var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);
		//nach oben verschieben
	//	if (parseInt(elmCache["clip"].style.height)>300 && y > 400)
	//		y-=parseInt(elmCache["clip"].style.height)/3;

		//y = Math.max(Math.min(y, maxY), minY);
		elmCache["clip"].style.left = x + "px";
		elmCache["clip"].style.top = y + "px";
	}

	function slideStart()
	{
		var x0 = parseInt(elmCache["content"].style[pos]);
		var x1 = _this.isOpen ? 0 : -dim;
		if (a != null)
			a.stop();
		a = new Accelimation(x0, x1, mtDropDown.slideTime, slideAccel);
		a.onframe = slideFrame;
		a.onend = slideEnd;
		a.start();
	}

	function slideFrame(x)
	{
		elmCache["content"].style[pos] = x + "px";
	}

	function slideEnd()
	{
		if (!_this.isOpen)
			elmCache["clip"].style.visibility = "hidden";
		animating = false;
	}

	function initSize()
	{
		try
		{
			var ow = elmCache["items"].offsetWidth;
			var oh = elmCache["items"].offsetHeight;
			var ua = navigator.userAgent.toLowerCase();

			elmCache["clip"].style.width = ow + mtDropDown.shadowSize + 2 + "px";
			elmCache["clip"].style.height = oh + mtDropDown.shadowSize + 2 + "px";

			elmCache["content"].style.width = ow + mtDropDown.shadowSize + "px";
			elmCache["content"].style.height = oh + mtDropDown.shadowSize + "px";
			contentHeight = oh + mtDropDown.shadowSize;
			contentWidth = ow + mtDropDown.shadowSize;
			dim = iDirection == mtDropDown.direction.down ? contentHeight : contentWidth;

			elmCache["content"].style[pos] = -dim - mtDropDown.shadowSize + "px";
			elmCache["clip"].style.visibility = "hidden";

			if (ua.indexOf("mac") == -1 || ua.indexOf("gecko") > -1)
			{
				elmCache["background"].style.width = ow + "px";
				elmCache["background"].style.height = oh + "px";
				//elmCache["background"].style.backgroundColor = mtDropDown.backgroundColor;

				elmCache["shadowRight"].style.left = ow + "px";
				elmCache["shadowRight"].style.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize) + "px";
				elmCache["shadowRight"].style.backgroundColor = mtDropDown.shadowColor;


				elmCache["shadowBottom"].style.top = oh + "px";
				elmCache["shadowBottom"].style.width = ow - mtDropDown.shadowOffset + "px";
				elmCache["shadowBottom"].style.backgroundColor = mtDropDown.shadowColor;
			}
			else
			{
				elmCache["background"].firstChild.src = mtDropDown.backgroundPng;
				elmCache["background"].firstChild.width = ow;
				elmCache["background"].firstChild.height = oh;

				elmCache["shadowRight"].firstChild.src = mtDropDown.shadowPng;
				elmCache["shadowRight"].style.left = ow + "px";
				elmCache["shadowRight"].firstChild.width = mtDropDown.shadowSize;
				elmCache["shadowRight"].firstChild.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize);


				elmCache["shadowBottom"].firstChild.src = mtDropDown.shadowPng;
				elmCache["shadowBottom"].style.top = oh + "px";
				elmCache["shadowBottom"].firstChild.height = mtDropDown.shadowSize;
				elmCache["shadowBottom"].firstChild.width = ow - mtDropDown.shadowOffset;
			}
		}
		catch (e){}
	}

	function initCache()
	{
		try
		{
			var menu = document.getElementById(id);
			var all = menu.all ? menu.all : menu.getElementsByTagName("*"); 
			elmCache = {};
			elmCache["clip"] = menu;
			elmCache["item"] = [];
			for (var i = 0, elm = null; elm = all[i]; i++)
			{
				switch (elm.className)
				{
					case "items":
					case "content":
					case "background":
					case "shadowRight":
					case "shadowBottom":
						elmCache[elm.className] = elm;
						break;
					case "item":
						elm._index = elmCache["item"].length;
						elmCache["item"][elm._index] = elm;
						break;
				}
			}
			
			_this.elmCache = elmCache;
		}
		catch (e) 
		{}
	}

	function initEvents()
	{
		try
		{
			for (var i = 0, item = null; item = elmCache.item[i]; i++)
			{
				item.onmouseover = item_mouseover;
				item.onmouseout = item_mouseout;
				item.onclick = item_click;
			}

			if (typeof oActuator.tagName != "undefined")
			{
				oActuator.onmouseover = actuator_mouseover;
				oActuator.onmouseout = actuator_mouseout;
			}

			elmCache["content"].onmouseover = content_mouseover;
			elmCache["content"].onmouseout = content_mouseout;
		}
		catch(e)
		{}
	}

	function highlight(oRow)
	{
		oRow.className = "item hover";
		try
		{
			if (childMenus[oRow._index]) 
				oRow.lastChild.firstChild.src = mtDropDown.dingbatOn;
		}
		catch(e){}
	}

	function dehighlight(oRow)
	{
		oRow.className = "item";
		try
		{
			if (childMenus[oRow._index]) 
				oRow.lastChild.firstChild.src = mtDropDown.dingbatOff;
		}
		catch(e){}
	}

	function item_mouseover()
	{
		if (!animating)
		{
			highlight(this);
			if (childMenus[this._index]) 
				childMenuSet.showMenu(childMenus[this._index]);
			else if (childMenuSet)
				childMenuSet.hide();
		}
	}

	function item_mouseout()
	{
		if (!animating)
		{
			if (childMenus[this._index])
			{
				childMenuSet.hideMenu(childMenus[this._index]);
			}
			else 
				dehighlight(this);
		}
	}

	function item_click()
	{
		if (!animating)
		{
			if (_this.items[this._index].url)
			{
				//if it's an external http:// link, then show the new page in a new window
				if(_this.items[this._index].url.indexOf('http://') > -1)
					window.open(_this.items[this._index].url,'','');
				else
					location.href = _this.items[this._index].url;
			}
		}
	}

	function actuator_mouseover()
	{
		//check if the previously saved actuator "currentActuator" is still the current actuator "this.id"
		if(currentActuator && this.id != currentActuator)
		{
			//if not, then hide all open menus from last actuator
			for(var i in openedMenuSets)
			{
				try{
					openedMenuSets[i].hide(openedMenuSets[i]);
				}catch(e){}
			}
			openedMenuSets.length = 0;
		}

		currentActuator = this.id;
		mouseIsOnDropDownSet = true;
		parentMenuSet.showMenu(_this);
	}
	function actuator_mouseout()
	{
		mouseIsOnDropDownSet = false;
		parentMenuSet.hideMenu(_this);
	}
	function content_mouseover()
	{
		if (!animating)
		{
			mouseIsOnDropDownSet = true;
			parentMenuSet.showMenu(_this);
			_this.onmouseover();
		}
	}
	function content_mouseout()
	{
		if (!animating)
		{
			mouseIsOnDropDownSet = false;
			parentMenuSet.hideMenu(_this);
		}
	}
	
	function child_mouseover()
	{
		if (!animating)
		{
			mouseIsOnDropDownSet = true;
			parentMenuSet.showMenu(_this);
		}
	}
	
	function child_deactivate() {
		for (var i = 0; i < childMenus.length; i++) {
			if (childMenus[i] == this) {
				dehighlight(elmCache["item"][i]);
				break;
			}
		}
	}
	function child_queue() {
		parentMenuSet.hideMenu(_this);
	}

	function toString() {
		try{
			var aHtml = [];
			var sClassName = "mtDropdownMenu" + (oActuator.constructor != mtDropDownItem ? " top" : "");
			var sBorderColor=""; //PBU
			var sResult="";
			for (var i = 0, item = null; item = this.items[i]; i++) {
				aHtml[i] = item.toString(childMenus[i]);
				sBorderColor=item.LinkColor;
				
			}
			sBorderColor = "#ffffff";
			
			sResult= '<div id="' + id + '" class="' + sClassName + '">' + 
			'<div class="content"><table class="items" cellpadding="0" cellspacing="0" width=179 border="0">' ;//  style="border-color:'+sBorderColor+';"
			
//			if (iDirection == 2) //menus from left add blue line on top
//				sResult += '<tr><td colspan="2" style="background-color:'+sBorderColor+';"><img src="/framwork/images/spacer.gif" width=1 height=1"></td></tr>' ;

			sResult += aHtml.join('<tr><td colspan=2 height=1 style="background-color:'+sBorderColor+';"></td></tr>') +  //PBU lines added
			'</table>' + //<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr>
			'<div class="background"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
			'</div></div>';

			//'<div class="shadowBottom"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
			//'<div class="shadowRight"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
			return sResult;
		}
		catch (e)
		{}
	}
}








mtDropDownSet.registry = [];

function mtDropDownSet(iDirection, iLeft, iTop, iReferencePoint, iHideDelay) 
{
	if(iHideDelay) mtDropDown.hideDelay = iHideDelay;

	this.addMenu = addMenu;
	this.showMenu = showMenu;
	this.hideMenu = hideMenu;
	this.hide = hide;

	var menus = [];
	var _this = this;
	var current = null;
	this.index = mtDropDownSet.registry.length;
	mtDropDownSet.registry[this.index] = this;


	function addMenu(oActuator) 
	{
		var m = new mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
		menus[menus.length] = m;
		return m;
	}
	
	function showMenu(oMenu) 
	{
		if (oMenu != current) 
		{
		openedMenuSets[openedMenuSets.length] = oMenu;
		
			if (current != null) 
				hide(current); 

			current = oMenu;

			oMenu.show();
		}
		else 
		{
			cancelHide(oMenu);
		}
	}

	function hideMenu(oMenu) 
	{
		if (current == oMenu && oMenu.isOpen) 
		{
			if (!oMenu.hideTimer)
				scheduleHide(oMenu);
		}
	}
	
	function scheduleHide(oMenu) 
	{
		oMenu.onqueue();
		oMenu.hideTimer = window.setTimeout("mtDropDownSet.registry[" + _this.index + "].hide(mtDropDown.registry[" + oMenu.index + "])", mtDropDown.hideDelay);
	}

	function cancelHide(oMenu) 
	{
		if (oMenu.hideTimer) 
		{
			window.clearTimeout(oMenu.hideTimer);
			oMenu.hideTimer = null;
		}
	}

	function hide(oMenu) 
	{
		if (!oMenu && current) 
			oMenu = current;

		//if the mouse is on any one element of the current flyout menu, then don't hide the menu
		if(!mouseIsOnDropDownSet)
		{
			if (oMenu && current == oMenu && oMenu.isOpen)
			{
				cancelHide(oMenu);
				current = null;
				oMenu.hideTimer = null;
				oMenu.hide();
			}
		}
		else if(oMenu)
		{
			//reschedule the hide function for hiding the menu later
			scheduleHide(oMenu);
		}
	}
	
}








function mtDropDownItem(sText, sUrl, oParent, sColor)
{
	this.toString = toString;
	this.text = sText;
	this.url = sUrl;
	this.parentMenu = oParent;
	this.LinkColor =sColor;

	function toString(bDingbat)
	{
		var sDingbat = bDingbat ? mtDropDown.dingbatOff : mtDropDown.spacerGif;
		var iEdgePadding = mtDropDown.itemPadding + mtDropDown.menuPadding;
		var sPaddingLeft = "padding:" + mtDropDown.itemPadding + "px; padding-left:" + iEdgePadding + "px;" //color:" + sColor +";
		var sPaddingRight = "padding:" + mtDropDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
		//PBU: changes für forbo-menu
		return '<tr class="item"><td nowrap style="' + sPaddingLeft + ' height:21px;" colspan=2 >' + 
		sText + '</td></tr>';// + 
		//'<img src="' + sDingbat + '" width="14" height="14"></td></tr>';
	}
}


















function Accelimation(from, to, time, zip) {
if (typeof zip == "undefined") zip = 0;
if (typeof unit == "undefined") unit = "px";
this.x0 = from;
this.x1 = to;
this.dt = time;
this.zip = -zip;
this.unit = unit;
this.timer = null;
this.onend = new Function();
this.onframe = new Function();
}




Accelimation.prototype.start = function() {
this.t0 = new Date().getTime();
this.t1 = this.t0 + this.dt;
var dx = this.x1 - this.x0;
this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
Accelimation._add(this);
}

Accelimation.prototype.stop = function() {
Accelimation._remove(this);
}




Accelimation.prototype._paint = function(time) {
if (time < this.t1) {
var elapsed = time - this.t0;
this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
}
else this._end();
}

Accelimation.prototype._end = function() {
Accelimation._remove(this);
this.onframe(this.x1);
this.onend();
}




Accelimation._add = function(o) {
var index = this.instances.length;
this.instances[index] = o;

if (this.instances.length == 1) {
this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
}
}

Accelimation._remove = function(o) {
for (var i = 0; i < this.instances.length; i++) {
if (o == this.instances[i]) {
this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
break;
}
}

if (this.instances.length == 0) {
window.clearInterval(this.timerID);
this.timerID = null;
}
}

Accelimation._paintAll = function() {
var now = new Date().getTime();
for (var i = 0; i < this.instances.length; i++) {
this.instances[i]._paint(now);
}
}

Accelimation._B1 = function(t) { return t*t*t }
Accelimation._B2 = function(t) { return 3*t*t*(1-t) }
Accelimation._B3 = function(t) { return 3*t*(1-t)*(1-t) }
Accelimation._B4 = function(t) { return (1-t)*(1-t)*(1-t) }

Accelimation._getBezier = function(percent,startPos,endPos,control1,control2) {
return endPos * this._B1(percent) + control2 * this._B2(percent) + control1 * this._B3(percent) + startPos * this._B4(percent);
}



Accelimation.instances = [];
Accelimation.targetRes = 10;
Accelimation.timerID = null;