multiSlideOutMenu.Registry = []
multiSlideOutMenu.aniLen = 300
multiSlideOutMenu.hideDelay = 1000
multiSlideOutMenu.minCPUResolution = 1
multiSlideOutMenu.topMargin = 0
multiSlideOutMenu.leftMargin = 0
multiSlideOutMenu.itemHeight = 25

// constructor
function multiSlideOutMenu(id, dir, parent_id, item_index)
{	

	//alert("id:"+id+" dir:"+dir+" paren_id:"+parent_id+" item_index:"+item_index)
	this.childs = []
	
	// global reference to this object
	this.gRef = "multiSlideOutMenu_"+id
	eval(this.gRef+"=this")

	// add this menu object to an internal list of all menus
	multiSlideOutMenu.Registry[id] = this
	
	// if its root, no further initialation
	if (!parent_id) {
		return;
	}
	
	// hierarchy
	this.parent = multiSlideOutMenu.Registry[parent_id]
	this.parent.childs[this.parent.childs.length] = this
	
	
	var content = getObjectById(id + "Content")
	this.index = item_index
	this.left = (content.clientLeft) ? content.clientLeft : 0
	this.top = (content.clientTop) ? content.clientTop : 0 
	this.width = content.clientWidth + 2
	this.height = content.clientHeight + 2
	
	// root menu positioning
	if (!this.parent.parent) {
		this.top += 0; 
	}
	
	// sub menu positioning
	else {
		this.left = multiSlideOutMenu.leftMargin + this.parent.left + this.parent.width
		this.top = multiSlideOutMenu.topMargin + this.parent.top  + (multiSlideOutMenu.itemHeight * this.index)
	}
	
	this.ie  = document.all ? 1 : 0
	this.ns4 = document.layers ? 1 : 0
	this.dom = document.getElementById ? 1 : 0

	//alert("ie:"+this.ie+" ns4:"+this.ns4+" dom:"+this.dom)
	
	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 == "down" ? "-" : "+"
		this.dim			 	= this.orientation == "h" ? this.width : this.height
		this.hideTimer	 	= false
		this.aniTimer	 	= false
		this.open		 	= false
		this.over		 	= false
		this.startTime	 	= 0
		
		var d = document
		
		var strCSS = '<style type="text/css">';
		strCSS += '#' + this.id + 'Container { '
		strCSS += 'left:' + this.left + 'px; '
		if(this.dirType == "-"){
			strCSS += 'top:' + this.top + 'px; '
			}else{
			strCSS += 'top:' + (this.top - this.height-30) + 'px; '
	    }strCSS += '}'
		strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { '
		strCSS += 'width:' + this.width + 'px; '
		strCSS += 'height:' + this.height + 'px; '
		strCSS += 'clip:rect(0 ' + this.width + ' ' + this.height + ' 0); '
		strCSS += '}'
		strCSS += '</style>';
		d.write(strCSS)
		this.load()
	}
}

multiSlideOutMenu.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) / multiSlideOutMenu.aniLen / multiSlideOutMenu.aniLen 

		// set event handlers.
		if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
		this.menu.onmouseover = new Function("multiSlideOutMenu.showMenu('" + this.id + "')")
		this.menu.onmouseout = new Function("multiSlideOutMenu.hideMenu('" + this.id + "')")

		//set initial state
		this.endSlide()
	}
}
	
multiSlideOutMenu.showMenu = function(id)
{
	var reg = multiSlideOutMenu.Registry
	var obj = multiSlideOutMenu.Registry[id]
	//alert(obj) 
	if (obj.container) {
		obj.over = true
			
		
		// close other same level menus
		var count = obj.parent.childs.length
		for (var i = 0 ; i < count ; i++) {
			var menu = obj.parent.childs[i]
			if (id != menu.id) {
				multiSlideOutMenu.hide(menu.id)
			}
		}

		// if this menu is scheduled to close, cancel it.
		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
		
		// and show its parent
		if (obj.parent.parent) {
			multiSlideOutMenu.showMenu(obj.parent.id);
		}

		// if this menu is closed, open it.
		if (!obj.open && !obj.aniTimer) {
			reg[id].startSlide(true)
		}
	}
}

multiSlideOutMenu.hideMenu = function(id)
{
	// schedules the menu to close after <hideDelay> ms, which
	// gives the user time to cancel the action if they accidentally moused out
	var obj = multiSlideOutMenu.Registry[id]
	
	// check if its child items are closed
	var count = obj.childs.length;
	for (var i = 0 ; i < count ; i++) {
		if (obj.childs[i].open && obj.childs[i].hideTimer == 0) {
			return;
		}
	}
	
	// schedule item it self for closing
	if (obj.container) {
		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		obj.hideTimer = window.setTimeout("multiSlideOutMenu.hide('" + id + "')", multiSlideOutMenu.hideDelay);
	}
	
	// schedule its parent for closing
	if (obj.parent.parent) {
		multiSlideOutMenu.hideMenu(obj.parent.id);
	}
	
}

multiSlideOutMenu.hide = function(id)
{
	var obj = multiSlideOutMenu.Registry[id]
	obj.over = false

	if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
	
	// flag that this scheduled event has occured.
	obj.hideTimer = 0

	// if this menu is open, close it and its childs.
	if (obj.open && !obj.aniTimer) {
		var count = obj.childs.length
		for (var i = 0 ; i < count ; i++) {
			multiSlideOutMenu.hide(obj.childs[i].id);
		}
		obj.startSlide(false);
	}
}

multiSlideOutMenu.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()", multiSlideOutMenu.minCPUResolution)
}

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

multiSlideOutMenu.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)
	}
}

multiSlideOutMenu.prototype.setVisibility = function(bShow) { 
	var s = this.ns4 ? this.container : this.container.style
	if (bShow) {
		s.visibility = "visible";
		s.zIndex = 10000;
		s.display = '';
	} else {
		s.visibility = "hidden";
		s.zIndex = 0;
		s.display = 'none'
	}
}
multiSlideOutMenu.prototype.moveTo = function(p) { 
	this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}
multiSlideOutMenu.prototype.getPos = function(c) {
	return parseInt(this.style[c])
}

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