/*****************************************************
* ypSlideOutMenu
* 3/04/2001
*
* a nice little script to create exclusive, slide-out
* menus for ns4, ns6, mozilla, opera, ie4, ie5 on
* mac and win32. I've got no linux or unix to test on but
* it should(?) work...
*
* --youngpup--
*****************************************************/
var j=-1;
var tabmenu=new Array();

ypSlideOutMenu.Registry = [];
ypSlideOutMenu.aniLen = 200
ypSlideOutMenu.hideDelay = 100
ypSlideOutMenu.minCPUResolution = 10

function ypSlideOutMenu (id, dir, left, bottom, width, height){
	this.ie = document.all ? 1 : 0
	this.ns4 = document.layers ? 1 : 0
	this.dom = document.getElementById ? 1 : 0
	this.elemCtr = this.dom ? document.getElementById(id+"Container") : document.all[id+"Container"];
	this.elemCont = this.dom ? document.getElementById(id+"Content") : document.all[id+"Content"];

	width=this.elemCont.offsetWidth;
	height=this.elemCont.offsetHeight;
	//alert(this.elemCont.offsetHeight);


	if (this.ie || this.ns4 || this.dom)
	{
		this.id = id
		this.dir = dir
		this.orientation = dir == "left" || dir == "right" ? "h" : "v"
		this.dirType = dir == "right" || dir == "up" ? "-" : "+"
		this.dim = this.orientation == "h" ? width : height
		this.hideTimer = false
		this.aniTimer = false
		this.open = false
		this.over = false
		this.startTime = 0
		this.gRef = "ypSlideOutMenu_"+id
		eval (this.gRef+"=this")
		ypSlideOutMenu.Registry[id] = this


		this.elemCtr.style.visibility='hidden';
		this.elemCtr.style.overflow='hidden';

		this.elemCont.style.clip='rect(0px '+width+'px '+height+'px 0px)';
		this.elemCont.style.position='relative';
		this.elemCont.style.clip.width=width;
		this.elemCont.style.clip.height=height;


		this.load()
	}
}


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


ypSlideOutMenu.showMenu = function(id)
{
	var reg = ypSlideOutMenu.Registry
	var obj = ypSlideOutMenu.Registry[id]
	if (obj.container)
	{
		obj.over = true
		//alert(reg);
		for (this.menu in reg)
		{
			if (id != this.menu){
				ypSlideOutMenu.hide(this.menu)
			}
		}

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


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


ypSlideOutMenu.hide = function (id){

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

}

ypSlideOutMenu.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()", ypSlideOutMenu.minCPUResolution)

}

ypSlideOutMenu.prototype.slide = function(){

	var elapsed = (new Date()).getTime() - this.startTime
	if (elapsed > ypSlideOutMenu.aniLen)
		this.endSlide()
	else
	{
		var d = Math.round(Math.pow(ypSlideOutMenu.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)
	}

}


ypSlideOutMenu.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)

}


ypSlideOutMenu.prototype.setVisibility = function(bShow){

	var s = this.ns4 ? this.container : this.container.style
	s.visibility = bShow ? "visible" : "hidden"

}


ypSlideOutMenu.prototype.moveTo = function(p)
{
	this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}


ypSlideOutMenu.prototype.getPos = function(c)
{

	return parseInt(this.style[c])

}


ypSlideOutMenu.prototype.onactivate = function()
{

}

ypSlideOutMenu.prototype.ondeactivate = function()
{

}




//This sets the size and position of each drop-down.
function declare(){
	for(var i=0; i < tabmenu.length; i++){
		eval('new ypSlideOutMenu ("'+tabmenu[i]+'", "up", 0, 0, 0, 0)');
	}
}

/**********************************
End of drop down menus
**********************************/