ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 1000
ypSlideOutMenu.hideDelay = 250
ypSlideOutMenu.minCPUResolution = 10

function ypSlideOutMenu(id, dir, left, top, width, height, length, delay){ 
	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.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.aniLen = length ? length : ypSlideOutMenu.aniLen
		this.hideDelay = delay ? delay : ypSlideOutMenu.hideDelay
		this.gRef = "ypSlideOutMenu_"+id
		
		eval(this.gRef+"=this")
		ypSlideOutMenu.Registry[id] = this
		var d = document
		
		d.write('<style type="text/css">')
		d.write('#' + this.id + 'Container { visibility:visible; ')
		d.write('left:' + left + 'px; ')
		d.write('top:' + top + '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 + ' ' + height + ' 0); ')
		d.write('}')
		d.write('</style>')
	} 
} 

ypSlideOutMenu.loadRegistry = function(){ 
	var reg = ypSlideOutMenu.Registry
	if 	(reg){ 
		for 	(menu in reg) ypSlideOutMenu.Registry[menu].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){ 
		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) / this.aniLen / this.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
		for (menu in reg) if (id != menu) ypSlideOutMenu.hide(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 = 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 > this.aniLen) this.endSlide()
	else{ 
			var d = Math.round(Math.pow(this.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])
}