/* MediaTemple DropDown
 * Javascript library responsible for the semi-transparent multi-level dropdown menus on the 
 * MediaTemple website.
 * Copyright 2003, Aaron Boodman (aaron@youngpup.net)
 * 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
 */





mtDropDown.spacerGif = "/images/javascript/space.gif"; 
mtDropDown.dingbatOn = "/images/javascript/arrow.gif"; 
mtDropDown.dingbatOff = "/images/javascript/arrow.gif"; 
mtDropDown.dingbatSize = 9; 
mtDropDown.menuPadding = 5; 
mtDropDown.itemPadding = 2; 
mtDropDown.shadowSize = 4; 
mtDropDown.shadowOffset = 4; 
mtDropDown.shadowColor = "#000"; 
mtDropDown.shadowPng = "/images/javascript/grey-40.png"; 
mtDropDown.backgroundColor = "#E4E2E7"; 
mtDropDown.backgroundPng = "/images/javascript/grey-402.png"; 
mtDropDown.hideDelay = 500; 
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() {
 var ua = navigator.userAgent.toLowerCase();
		var pf = navigator.platform.toLowerCase();
 var an = navigator.appName;
 var r = false;

 if (ua.indexOf("gecko") > -1) r = true; 
 else if (an == "Microsoft Internet Explorer") {
 if (document.getElementById) { 
 if (pf.indexOf("mac") == 0) {
							r = /msie (\d(.\d*)?)/.test(ua) && Number(RegExp.$1) >= 5.1;
						}
						else r = true;
 }
 }

 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";
 var dim = null;

 
 function addItem(sText, sUrl) {
 var item = new mtDropDownItem(sText, sUrl, this);
 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, -5, 2, mtDropDown.reference.topRight);

 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 ? oActuator.parentMenu.elmCache["item"][oActuator._index] : oActuator; 
 var el = act;
 
 var x = 0;
 var y = 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);

 
 while (sub ? el.parentNode.className.indexOf("mtDropdownMenu") == -1 : el.offsetParent) {
 x += el.offsetLeft;
 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:
 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);
 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() {
 
 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;
 }
 }
 
 function initCache() {
 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;
 }

 function initEvents() {
 
 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;
 }

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

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

 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) 
 location.href = _this.items[this._index].url;
 }
 }

 function actuator_mouseover() {
 parentMenuSet.showMenu(_this);
 }

 function actuator_mouseout() {
 parentMenuSet.hideMenu(_this);
 }

 function content_mouseover() {
 if (!animating) {
 parentMenuSet.showMenu(_this);
 _this.onmouseover();
 }
 }

 function content_mouseout() {
 if (!animating) {
 parentMenuSet.hideMenu(_this);
 }
 }

 function child_mouseover() {
 if (!animating) {
 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() {
 var aHtml = [];
 var sClassName = "mtDropdownMenu" + (oActuator.constructor != mtDropDownItem ? " top" : "");

 for (var i = 0, item = null; item = this.items[i]; i++) {
 aHtml[i] = item.toString(childMenus[i]);
 }

 return '<div id="' + id + '" class="' + sClassName + '">' + 
 '<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">' + 
 '<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr>' + 
 aHtml.join('') + 
 '<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr></table>' + 
 '<div class="shadowBottom"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
 '<div class="shadowRight"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
		 '<div class="background"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
	 '</div></div>';
 }
}










mtDropDownSet.registry = [];

function mtDropDownSet(iDirection, iLeft, iTop, iReferencePoint) {
 
 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) {
 
 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 (oMenu && current == oMenu && oMenu.isOpen) {
 
 cancelHide(oMenu);
 current = null;
 oMenu.hideTimer = null;
 oMenu.hide();
 }
 }

}









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

 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;"
 var sPaddingRight = "padding:" + mtDropDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
 var dingbatSize = mtDropDown.dingbatSize;

 return '<tr class="item"><td nowrap style="' + sPaddingLeft + '">' + 
 sText + '</td><td width="' + dingbatSize + '" style="' + sPaddingRight + '">' + 
 '<img src="' + sDingbat + '" width="' + dingbatSize + '" height="' + dingbatSize + '"></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;