/* =================================================================================================
* Media Temple DropDown
*
* Javascript library responsible for the semi-transparent multi-level dropdown menus on the 
* (rs) 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/transmenus */

HHDropDown.spacerGif = "/assets/x.gif";
HHDropDown.dingbatOn = "/assets/expand-1.gif";
HHDropDown.dingbatOff = "/assets/expand-0.gif"; 
HHDropDown.dingbatSize = 14;
HHDropDown.menuPadding = 0;
HHDropDown.itemPadding = 4;
HHDropDown.shadowSize = 2;
HHDropDown.shadowOffset = 3;
HHDropDown.shadowColor = "#FFF";
HHDropDown.shadowPng = "/assets/grey-40.png";
HHDropDown.backgroundColor = "#405e6f";
HHDropDown.backgroundPng = "/assets/white-90.png";
HHDropDown.hideDelay = 700;
HHDropDown.slideTime = 200;
HHDropDown.reference =
{
    topLeft:1,topRight:2,bottomLeft:3,bottomRight:4
};
HHDropDown.direction =
{
    down:1,right:2
};
HHDropDown.registry = [];
HHDropDown._maxZ = 100;
HHDropDown.isSupported = function()
{
    if (typeof HHDropDown.isSupported.r == "boolean")
    return HHDropDown.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;
    }
    HHDropDown.isSupported.r = r;
    return r;
}
HHDropDown.initialize = function()
{
    for (var i = 0, menu = null; menu = this.registry[i]; i++)
    {
        menu.initialize();
    }
}
HHDropDown.renderAll = function()
{
    var aMenuHtml = [];
    for (var i = 0, menu = null; menu = this.registry[i]; i++)
    {
        aMenuHtml[i] = menu.toString();
    }
    document.write(aMenuHtml.join(""));
}
function HHDropDown(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 = HHDropDown.registry.length;
HHDropDown.registry[this.index] = this;
var id = "HHDropDown" + 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 == HHDropDown.direction.down ? "top" : "left";
var dim = null;
function addItem(sText, sUrl)
{
    var item = new HHDropDownItem(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 HHDropDownSet(HHDropDown.direction.right, -5, 2, HHDropDown.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 = HHDropDown._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 == HHDropDownItem;
    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("HHDropDownMenu") == -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 == HHDropDownItem)
    {
        x += parseInt(el.parentNode.style.left);
        y += parseInt(el.parentNode.style.top);
    }
    switch (iReferencePoint)
    {
        case HHDropDown.reference.topLeft:
        break;
        case HHDropDown.reference.topRight:
        x += act.offsetWidth;
        break;
        case HHDropDown.reference.bottomLeft:
        y += act.offsetHeight;
        break;
        case HHDropDown.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, HHDropDown.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 + HHDropDown.shadowSize + 2 + "px";
    elmCache["clip"].style.height = oh + HHDropDown.shadowSize + 2 + "px";
    elmCache["content"].style.width = ow + HHDropDown.shadowSize + "px";
    elmCache["content"].style.height = oh + HHDropDown.shadowSize + "px";
    contentHeight = oh + HHDropDown.shadowSize;
    contentWidth = ow + HHDropDown.shadowSize;
    dim = iDirection == HHDropDown.direction.down ? contentHeight : contentWidth;
    elmCache["content"].style[pos] = -dim - HHDropDown.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 = HHDropDown.backgroundColor;
        elmCache["shadowRight"].style.left = ow + "px";
        elmCache["shadowRight"].style.height = oh - (HHDropDown.shadowOffset - HHDropDown.shadowSize) + "px"
        elmCache["shadowRight"].style.backgroundColor = HHDropDown.shadowColor;
        elmCache["shadowBottom"].style.top = oh + "px";
        elmCache["shadowBottom"].style.width = ow - HHDropDown.shadowOffset + "px";
        elmCache["shadowBottom"].style.backgroundColor = HHDropDown.shadowColor;
    }
    else
    {
        elmCache["background"].firstChild.src = HHDropDown.backgroundPng;
        elmCache["background"].firstChild.width = ow;
        elmCache["background"].firstChild.height = oh;
        elmCache["shadowRight"].firstChild.src = HHDropDown.shadowPng;
        elmCache["shadowRight"].style.left = ow + "px";
        elmCache["shadowRight"].firstChild.width = HHDropDown.shadowSize;
        elmCache["shadowRight"].firstChild.height = oh - (HHDropDown.shadowOffset - HHDropDown.shadowSize);
        elmCache["shadowBottom"].firstChild.src = HHDropDown.shadowPng;
        elmCache["shadowBottom"].style.top = oh + "px";
        elmCache["shadowBottom"].firstChild.height = HHDropDown.shadowSize;
        elmCache["shadowBottom"].firstChild.width = ow - HHDropDown.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 = HHDropDown.dingbatOn;
}
function dehighlight(oRow)
{
    oRow.className = "item";
    if (childMenus[oRow._index])
    oRow.lastChild.firstChild.src = HHDropDown.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 = "HHDropDownMenu" + (oActuator.constructor != HHDropDownItem ? " 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="' + HHDropDown.spacerGif + '" width="1" height="' + HHDropDown.menuPadding + '"></td></tr>' +
    aHtml.join('') +
    '<tr><td colspan="2"><img src="' + HHDropDown.spacerGif + '" width="1" height="' + HHDropDown.menuPadding + '"></td></tr></table>' +
    '<div class="shadowBottom"><img src="' + HHDropDown.spacerGif + '" width="1" height="1"></div>' +
    '<div class="shadowRight"><img src="' + HHDropDown.spacerGif + '" width="1" height="1"></div>' +
    '<div class="background"><img src="' + HHDropDown.spacerGif + '" width="1" height="1"></div>' +
    '</div></div>';
}
}
HHDropDownSet.registry = [];
function HHDropDownSet(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 = HHDropDownSet.registry.length;
    HHDropDownSet.registry[this.index] = this;
function addMenu(oActuator)
{
    var m = new HHDropDown(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("HHDropDownSet.registry[" + _this.index + "].hide(HHDropDown.registry[" + oMenu.index + "])", HHDropDown.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 HHDropDownItem(sText, sUrl, oParent)
{
    this.toString = toString;
    this.text = sText;
    this.url = sUrl;
    this.parentMenu = oParent;
function toString(bDingbat)
{
    var sDingbat = bDingbat ? HHDropDown.dingbatOff : HHDropDown.spacerGif;
    var iEdgePadding = HHDropDown.itemPadding + HHDropDown.menuPadding;
    var sPaddingLeft = "padding:" + HHDropDown.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
    var sPaddingRight = "padding:" + HHDropDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
    return '<tr class="item"><td nowrap style="' + sPaddingLeft + '">' +
    sText + '</td><td width="14" style="' + sPaddingRight + '">' +
    '<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;