/*****************************************************
* ypMenu
* 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--
*****************************************************/
ypMenu.Registry = []
ypMenu.aniLen = 350
ypMenu.hideDelay = 500
ypMenu.minCPUResolution = 20


function ypMenu(id, dir, left, top, width, height, items){
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.left = left
	this.height = height
	this.items = items
	this.startTime = 0
	this.gRef = "ypMenu_"+id
	eval(this.gRef+"=this")
	ypMenu.Registry[id] = this
	var d = document
		d.write('<style type="text/css">')
		d.write('#' + this.id + 'Container { visibility:hidden; ')
		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>')
	this.load()
}
}


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


ypMenu.showMenu = function(id){

var reg = ypMenu.Registry
var obj = ypMenu.Registry[id]
if (obj && obj.container && obj.items > 0) {
	obj.over = true
	for (menu in reg) if (id != menu) ypMenu.hide(menu)
	if (obj.hideTimer) { 
		reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) 
	}
	if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
}
}

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

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

ypMenu.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()", ypMenu.minCPUResolution)
}

ypMenu.prototype.slide = function() {
var elapsed = (new Date()).getTime() - this.startTime
if (elapsed > ypMenu.aniLen) this.endSlide()
else {
var d = Math.round(Math.pow(ypMenu.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)
}
}
ypMenu.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)
}
}
ypMenu.prototype.setVisibility = function(bShow) { 
var s = this.ns4 ? this.container : this.container.style
s.visibility = bShow ? "visible" : "hidden"
}
ypMenu.prototype.moveTo = function(p) { 
this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}
ypMenu.prototype.getPos = function(c) {
return parseInt(this.style[c])
}
ypMenu.prototype.onactivate = function() { }
ypMenu.prototype.ondeactivate = function() { }