/**
 * AnimatedMenu
 * 08/19/2004
 * 
 * Derived from ypSlideOutMenu - 3/04/2001
 */
AnimatedMenu.Registry         = []
AnimatedMenu.aniLen           = 200
AnimatedMenu.hideDelay        = 100
AnimatedMenu.minCPUResolution = 10

function AnimatedMenu(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        = "AnimatedMenu_"+id;
		
		AnimatedMenu.Registry[id] = this;
		eval(this.gRef+"=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 + 'px' + ' ' + height + 'px' + ' 0); ');
		d.write('}');
		d.write('</style>');
		
		this.load();
	}
}

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


AnimatedMenu.showMenu = function(id)
{
	var reg = AnimatedMenu.Registry;
	var obj = AnimatedMenu.Registry[id];
	
	if (obj.container) {
		obj.over = true;
		for (menu in reg) {
			if (id != menu) AnimatedMenu.hide(menu);
		}
		if (obj.hideTimer) { 
			reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer); 
		}
		if (!obj.open && !obj.aniTimer) {
			reg[id].startSlide(true);
		}
	}
};


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


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


AnimatedMenu.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()", AnimatedMenu.minCPUResolution);
};


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


AnimatedMenu.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);
	}
};


AnimatedMenu.prototype.setVisibility = function(bShow) 
{ 
	var s = this.ns4 ? this.container : this.container.style;
	s.visibility = bShow ? "visible" : "hidden";
};


AnimatedMenu.prototype.moveTo = function(p) 
{ 
	this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px";
};


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


AnimatedMenu.prototype.onactivate = function() { ; };
AnimatedMenu.prototype.ondeactivate = function() { ; };