// detect win/mac
var agent = navigator.userAgent.toLowerCase(); 
var is_mac = (agent.indexOf("mac") != -1);
var is_win = (agent.indexOf("win") != -1);
var is_ie =  (agent.indexOf("msie") != -1);


var gFlashVersion;

SlideMenu.Registry = [];
SlideMenu.aniLen = 300;
SlideMenu.hideDelay = 750;
SlideMenu.minCPUResolution = 10;

function SlideMenu(id, width, height)
{
	this.ie = document.all ? 1 : 0;
	this.ns4 = document.layers ? 1 : 0;
	this.dom = document.getElementById ? 1 : 0;

	if (this.ie || this.ns4 || this.dom)
	{
		this.id = id;
		this.dirType = "-";
		this.dim = height;
		this.hideTimer = false;
		this.aniTimer = false;
		this.open = false;
		this.over = false;
		this.startTime = 0;
		this.gRef = "SlideMenu_" + id;
		
		eval(this.gRef + "=this");
		SlideMenu.Registry[id] = this;
		
		var d = document;
		d.write('<style type="text/css">');
		d.write('#' + this.id + 'Container { visibility:hidden; ');
		d.write('left:' + 0 + 'px; ');
		d.write('top:' + 0 + 'px; ');
		d.write('overflow:hidden; }');
		d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; ');
		d.write('width:' + width + 'px; ');
		d.write('height:' + height + 'px; ');
		d.write('clip:rect(0 ' + width + 'px' + ' ' + height + 'px' + ' 0); ');
		d.write('}');
		d.write('</style>');
		
		this.load()
	}
}

SlideMenu.prototype.load = function()
{
	var d = document;
	var lyrId1 = this.id + "Container";
	var lyrId2 = this.id + "Content";
	var obj1 = this.dom ? d.getElementById(lyrId1) : this.ie ? d.all[lyrId1] : d.layers[lyrId1];
	
	if (obj1)
	{
		var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2);
	}
	
	var temp;
	
	if (!obj1 || !obj2)
	{
		window.setTimeout(this.gRef + ".load()", 100);
	}
	else
	{
		this.container = obj1;
		this.menu = obj2;
		this.style = this.ns4 ? this.menu : this.menu.style;
		this.homePos = eval("0" + this.dirType + this.dim);
		this.outPos = 0;
		this.accelConst = (this.outPos - this.homePos) / SlideMenu.aniLen / SlideMenu.aniLen ;

		if (this.ns4)
		{
			this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
		}
		
		this.menu.onmouseover = new Function("SlideMenu.showMenu('" + this.id + "')");
		this.menu.onmouseout = new Function("SlideMenu.hideMenu('" + this.id + "')");
		this.endSlide();
	}
}

SlideMenu.showMenu = function(id)
{
	var reg = SlideMenu.Registry;
	var obj = SlideMenu.Registry[id];

	if (obj.container)
	{
		obj.over = true;
		
		for (menu in reg)
		{
			if (id != menu)
			{
			    SlideMenu.hide(menu)
			}
		}

		if (obj.hideTimer)
		{
			reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer);
		}
			
		if (!obj.open && !obj.aniTimer)
		{
			reg[id].startSlide(true);
		}
	}
}

SlideMenu.hideMenu = function(id)
{
	var obj = SlideMenu.Registry[id];
	
	if (obj.container)
	{
		if (obj.hideTimer)
		{
			window.clearTimeout(obj.hideTimer);
		}
			
		obj.hideTimer = window.setTimeout("SlideMenu.hide('" + id + "')", SlideMenu.hideDelay);
	}
}

SlideMenu.hide = function(id)
{
	var obj = SlideMenu.Registry[id];
	obj.over = false;
	
	if (obj.hideTimer)
	{
		window.clearTimeout(obj.hideTimer);
	}
	
	obj.hideTimer = 0;
	
	if (obj.open && !obj.aniTimer)
	{
		obj.startSlide(false);
	}
}

SlideMenu.prototype.startSlide = function(open)
{
	this[open ? "onactivate" : "ondeactivate"]();
	this.open = open;
	
	if (open)
	{
		this.setVisibility(true);
	}
		
	this.startTime = (new Date()).getTime();
	this.aniTimer = window.setInterval(this.gRef + ".slide()", SlideMenu.minCPUResolution);
}

SlideMenu.prototype.slide = function()
{
	var elapsed = (new Date()).getTime() - this.startTime;
	
	if (elapsed > SlideMenu.aniLen)
	{
		this.endSlide();
	}
	else
	{
		var d = Math.round(Math.pow(SlideMenu.aniLen - elapsed, 2) * this.accelConst);
		
		if (this.open && this.dirType == "-")
		{
			d = -d;
		}
		else if (this.open && this.dirType == "+")
		{
			d = -d;
		}
		else if (!this.open && this.dirType == "-")
		{
			d = -this.dim + d;
		}
		else
		{
			d = this.dim + d;
		}
		
		this.moveTo(d);
	}
}

SlideMenu.prototype.endSlide = function()
{
	this.aniTimer = window.clearTimeout(this.aniTimer);
	this.moveTo(this.open ? this.outPos : this.homePos);
	
	if (!this.open)
	{
		this.setVisibility(false);
	}
	
	if ((this.open && !this.over) || (!this.open && this.over))
	{
		this.startSlide(this.over);
	}

}

SlideMenu.prototype.setVisibility = function(bShow)
{ 
	var s = this.ns4 ? this.container : this.container.style;
	s.visibility = bShow ? "visible" : "hidden";
}

SlideMenu.prototype.moveTo = function(p)
{
	this.style["top"] = this.ns4 ? p : p + "px";
}

SlideMenu.prototype.getPos = function(c)
{
	return parseInt(this.style[c]);
}

SlideMenu.prototype.onactivate = function()
{
}

SlideMenu.prototype.ondeactivate = function()
{
}

function PositionMenu(menu, item)
{
 	var newLeft = item.offsetLeft + 15;
	var newTop = item.offsetTop + 28 + 1;

	if (is_mac && is_ie)
	{
		newLeft -= 17;
		newTop -= 8;
	}
	
	for (var parent = item.offsetParent; parent != null; parent = parent.offsetParent)
	{
		newLeft = newLeft + parent.offsetLeft;
		newTop = newTop + parent.offsetTop;
	}
	
	menu.container.style ? menu.container.style.left = newLeft + "px" : menu.container.left = newLeft;
	menu.container.style ? menu.container.style.top = newTop + "px" : menu.container.top = newTop;
}


menu1 = new SlideMenu("menu1", 200, 156);
menu2 = new SlideMenu("menu2", 200, 116);
menu3 = new SlideMenu("menu3", 200, 116);
menu4 = new SlideMenu("menu4", 200, 336);
menu5 = new SlideMenu("menu5", 230, 56);
menu6 = new SlideMenu("menu6", 200, 56);
menu7 = new SlideMenu("menu7", 130, 300);
menu8 = new SlideMenu("menu8", 130, 300);

menu1.onactivate = function() { PositionMenu(menu1, document.getElementById("menuBarItem0")); }
menu2.onactivate = function() { PositionMenu(menu2, document.getElementById("menuBarItem1")); }
menu3.onactivate = function() { PositionMenu(menu3, document.getElementById("menuBarItem2")); }
menu4.onactivate = function() { PositionMenu(menu4, document.getElementById("menuBarItem3")); }
menu5.onactivate = function() { PositionMenu(menu5, document.getElementById("menuBarItem4")); }
menu6.onactivate = function() { PositionMenu(menu6, document.getElementById("menuBarItem5")); }
menu7.onactivate = function() { PositionMenu(menu7, document.getElementById("menuBarItem6")); }
menu8.onactivate = function() { PositionMenu(menu8, document.getElementById("menuBarItem7")); }