ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 250
ypSlideOutMenu.hideDelay = 100
ypSlideOutMenu.minCPUResolution = 10

// constructor
function ypSlideOutMenu(id, dir, left, top, width, height, parentid)
{
	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.sliding = false;
		this.id			 = id
		this.dir		 = dir
		this.orientation = dir == "left" || dir == "right" ? "h" : "v"
		this.dirType	 = dir == "right" || dir == "down" ? "-" : "+"
		this.dim		 = this.orientation == "h" ? width : height
		this.hideTimer	 = false
		this.aniTimer	 = false
		this.open		 = false
		this.over		 = false
		this.startTime	 = 0
		this.parentid = parentid

		// global reference to this object
		this.gRef = "ypSlideOutMenu_"+id
		eval(this.gRef+"=this")

		// add this menu object to an internal list of all menus
		ypSlideOutMenu.Registry[id] = this

		var d = document;

                var strCSS = '<style type="text/css">';
                strCSS += '#' + this.id + 'Container {'
		strCSS += 'left:' + left + 'px; '
		strCSS += 'top:' + top + 'px; '
		strCSS += 'overflow:hidden; z-index:100;FILTER: alpha(opacity=100) }'
		strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; '
		strCSS += 'width:' + width + 'px; '
		strCSS += 'height:' + height + 'px; '
		strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '
		strCSS += '}'
                strCSS += '</style>';

                d.write(strCSS)

		
		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)
	if (!obj1 || !obj2) {
		window.setTimeout(this.gRef + ".load()", 0);
	} else {
		this.container = obj1
		this.menu = obj2
		this.style = this.ns4 ? this.menu : this.menu.style
		// SEE NOTE ABOVE.  The following function call for the 31 menus bug.
		//this.setStyle()
		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, e)
{
	button = id.replace('menu', 'link');
	document.getElementById(button).style.backgroundImage = "url(images/bg_top_hover.gif)";
	//document.images[button].src="buttons/"+button+"_o.gif";
	var reg = ypSlideOutMenu.Registry
	var obj = ypSlideOutMenu.Registry[id]
	if (obj.container) {
//		if (obj.ie) alert('showing: ' + id);
		obj.over = true
		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
		obj.showcount++;
		if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
	}
	if (obj.ns4) obj.menu.routeEvent(Event.MOUSEOVER);
}
var e=0;
ypSlideOutMenu.hideMenu = function(id, e)
{
	button = id.replace('menu', 'link');
	document.getElementById(button).style.backgroundImage = "url(images/px.gif)";
	//if (e!=1){document.images[button].src="buttons/"+button+".gif";}
	var obj = ypSlideOutMenu.Registry[id]
	if (obj.container) {
//		if (obj.ie) alert('hiding: ' + id);
		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		obj.showcount--;
		obj.hideTimer = window.setTimeout("ypSlideOutMenu.hide('" + id + "')", ypSlideOutMenu.hideDelay);
	}
	if (obj.ns4) obj.menu.routeEvent(Event.MOUSEOUT);
}

/*
ypSlideOutMenu.prototype.isOverMenu = function(evnt) {
	if (evnt) {
		return ((this.initleft < evnt.pageX && evnt.pageX < (this.initleft + this.initwidth)) && (this.inittop < evnt.pageY && evnt.pageY < (this.inittop + this.initheight)))?true:false;
	} else {
		return true;
	}
}
*/

ypSlideOutMenu.hide = function(id) {
	var obj = ypSlideOutMenu.Registry[id]
	var reg = ypSlideOutMenu.Registry
	obj.over = false
	if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
	obj.hideTimer = 0
	var close = true;
	for (menu in reg) {
		// for each child, if either
		//  1. the child is open or
		//  2. the child is closing (but hasn't closed yet)
		// then we don't close this menu.
		var pid = ypSlideOutMenu.Registry[menu].parentid
		if (pid == id) {
			if (ypSlideOutMenu.Registry[menu].open) close = false;
			if (!ypSlideOutMenu.Registry[menu].open && ypSlideOutMenu.Registry[menu].sliding) close = false;
		}
	}
	if (obj.open && !obj.aniTimer && close && !obj.showcount) obj.startSlide(false);
}


ypSlideOutMenu.prototype.startSlide = function(open) {
	this.open = open
	if (open) this.setVisibility(true)
	this.startTime = (new Date()).getTime() 
	this.sliding = true;
	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)
	this.sliding = false;
	if (((this.open && !this.over) || (!this.open && this.over)) && (!this.parent || this.parent.open)) {
		this.startSlide(this.over)
	} else {
		var overchild = false;
		var reg = ypSlideOutMenu.Registry
		for (menu in reg) {
			var pid = ypSlideOutMenu.Registry[menu].parentid
			if (pid == this.id) overchild = ypSlideOutMenu.Registry[menu].over ? true : overchild		
		}
//		if (!overchild && this.parentid && !ypSlideOutMenu.Registry[this.parentid].over) ypSlideOutMenu.hideMenu(this.parentid);
		if (!overchild && this.parentid && !ypSlideOutMenu.Registry[this.parentid].over) ypSlideOutMenu.hide(this.parentid);
	}
}

ypSlideOutMenu.prototype.setVisibility = function(bShow) { 
	var s = this.ns4 ? this.container : this.container.style
	s.visibility = bShow ? "visible" : "hidden";
	s.display = bShow ? "block" : "none"
}

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

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

// events
ypSlideOutMenu.prototype.onactivate		= function() { }
ypSlideOutMenu.prototype.ondeactivate	= function() { }


var menus = [
		new ypSlideOutMenu("menu1", "down", 263, 31, 205, 150, null),//id, dir, left, top, width, height, parentid
		new ypSlideOutMenu("menu2", "down", 343, 31, 205, 150, null),
		new ypSlideOutMenu("menu3", "down", 423, 31, 205, 150, null),
		new ypSlideOutMenu("menu4", "down", 503, 31, 205, 150, null),
		new ypSlideOutMenu("menu5", "down", 583, 31, 205, 150, null),
		new ypSlideOutMenu("menu6", "down", 663, 31, 205, 150, null)
	]