/*****************************************************
* 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 = 100;
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 + 'Container, #' + this.id + 'Content { position:absolute; ';
		strCSS += 'width:' + width + 'px; ';
		strCSS += 'height:' + height + 'px; ';
		if(this.ie){
		    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 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);
	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){
	document.getElementById("hiddenMenu").style.display = "";	
	var reg = ypSlideOutMenu.Registry;
	var obj = ypSlideOutMenu.Registry[id];
	if(obj.container) {
		obj.over = true;
		//alert("test");
		for(menu in reg.menu){
			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);
	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]);
}

ypSlideOutMenu.prototype.onactivate = function() { }

ypSlideOutMenu.prototype.ondeactivate = function() { }