<!-- //
/*****************************************************
 * ypSlideOutMenu
 * http://ypslideoutmenus.sourceforge.net/
 * 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... 
 *
 * Licensed under AFL 2.0
 * http://www.opensource.org/licenses/afl-2.0.php
 *
 * --youngpup--
 *****************************************************/
ypSlideOutMenu.Registry = [];
ypSlideOutMenu.aniLen = 750;
ypSlideOutMenu.hideDelay = 100;
ypSlideOutMenu.minCPUResolution = 10;

var iZIndex = 10000

// 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;

		// global reference to this object
		this.gRef = "ypSlideOutMenu_"+id
		eval(this.gRef+"=this")

		// add this menu object to an internal list of all menus
		ypSlideOutMenu.Registry[id] = this

		var d = document

		var strCSS = '<style type="text/css">';
		strCSS += '#' + this.id + 'Container {visibility:hidden; '
		strCSS += 'left:' + left + 'px; '
		strCSS += 'top:' + top + 'px; '
//		strCSS += 'overflow:hidden; z-index:10000; }'
		strCSS += 'overflow:hidden; z-index:' + iZIndex + '; }'
		strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; '
		strCSS += 'width:' + width + 'px; '
		strCSS += 'height:' + height + 'px; '
		strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '
		strCSS += '}'
		strCSS += '</style>';
		iZIndex++;

		d.write(strCSS)

		this.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];
var temp;

	if (obj1) var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2)
 
	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) / 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

		// close other menus.
		for (menu in reg)
			if (id != menu)
				ypSlideOutMenu.hide(menu);
 
		// if this menu is scheduled to close, cancel it.
		if (obj.hideTimer) {
			reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer);
		}

		// if this menu is closed, open it.
		if (!obj.open && !obj.aniTimer)
			reg[id].startSlide(true);
	}
}

ypSlideOutMenu.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 = 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);

	// flag that this scheduled event has occured.
	obj.hideTimer = 0;
 
	// if this menu is open, close it.
	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);
	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);
	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]);
}

// events
ypSlideOutMenu.prototype.onactivate  = function() { }
ypSlideOutMenu.prototype.ondeactivate = function() { }
// -->