/*****************************************************
* 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... 
*
* Revised:
* - 08/29/2002 : added .hideAll()
* - 04/15/2004 : added .writeCSS() to support more 
*                than 30 menus.
*
* --youngpup--
*****************************************************/
ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 200
ypSlideOutMenu.hideDelay = 150
ypSlideOutMenu.minCPUResolution = 10
// constructor
function ypSlideOutMenu(id, dir, left, top, width, height) {
	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.gRef = "ypSlideOutMenu_"+id
		eval(this.gRef+"=this")
		ypSlideOutMenu.Registry[id] = this
		var d = document
		var strCSS = "";
		strCSS += '#' + this.id + 'Container { visibility:hidden; '
		strCSS += 'left:' + left + 'px; '
		strCSS += 'top:' + top + 'px; '
		strCSS += 'overflow:hidden; z-index:10000; }'
		strCSS += '#' + this.id + 'Shim { visibility:hidden;display:none;background-color: transparent; '
		strCSS += 'left:' + left + 'px; '
		strCSS += 'top:' + top + 'px; '
//		strCSS += 'top:0px; '
		strCSS += 'overflow:hidden; z-index:9999; }'
		strCSS += '#' + this.id + 'Container, #' + this.id + 'Content, #' + this.id + 'Shim { position:absolute; '
		strCSS += 'width:' + width + 'px; '
		strCSS += 'height:' + height + 'px; '
		strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '
		strCSS += '}'
		this.css = strCSS;
		this.load()
	}
}
ypSlideOutMenu.writeCSS = function() {
	document.writeln('<style type="text/css">');
	for (var id in ypSlideOutMenu.Registry) {
		document.writeln(ypSlideOutMenu.Registry[id].css);
	}
	document.writeln('</style>');
}
ypSlideOutMenu.prototype.load = function() {
	var d = document
	var lyrId1 = this.id + "Container"
	var lyrId2 = this.id + "Content"
	var lyrId3 = this.id + "Shim"
	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 obj3 = this.dom ? d.getElementById(lyrId3) : this.ie ? d.all[lyrId3] : d.layers[lyrId3]
	var temp
	if (!obj1 || !obj2 || !obj3) {
		window.setTimeout(this.gRef + ".load()", 100)
	} else {
		this.container = obj1
		this.menu = obj2
		this.shim = obj3
		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 
		// set event handlers.
		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 + "')")
		//set initial state
		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.hideAll = function() {
	var reg = ypSlideOutMenu.Registry
	for (menu in reg) {
		ypSlideOutMenu.hide(menu);
		if (menu.hideTimer) {
			window.clearTimeout(menu.hideTimer);
		}
	}
}
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)
	} else {
		this.setShimVisibility(false);
	}
	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)
		this.setShimVisibility(false)
	} else {
		this.setShimVisibility(true);
	}
	if ((this.open && !this.over) || (!this.open && this.over)) {
		this.startSlide(this.over)
	}
}
ypSlideOutMenu.prototype.setShimVisibility = function(bShow) { 
	var t = this.ns4 ? this.shim : this.shim.style
	if (bShow) {
		t.display = "block";
		t.visibility = "visible";
	} else {
		t.display = "none";
		t.visibility = "hidden";
	}
}
ypSlideOutMenu.prototype.setVisibility = function(bShow) { 
//	var t = this.ns4 ? this.shim : this.shim.style
	var s = this.ns4 ? this.container : this.container.style
	if (bShow) {
//		t.display = "block";
//		t.visibility = "visible";
		s.display = "block";
		s.visibility = "visible";
	} else {
		s.display = "none";
		s.visibility = "hidden";
//		t.display = "none";
//		t.visibility = "hidden";
	}
}
ypSlideOutMenu.prototype.moveTo = function(p) { 
	/*
	if (this.orientation == "h") {
		this.shim.style.left = this.ns4 ? p : p + "px"
	} else {
		this.shim.style.top = this.ns4 ? p : p + "px"
	}
	*/
	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() {
}