/*****************************************************
 * 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... 
 *
 * --youngpup--
 *****************************************************/

ypSlideOutMenu.Registry = [];
ypSlideOutMenu.aniLen = 250;
ypSlideOutMenu.hideDelay = 1000;
ypSlideOutMenu.minCPUResolution = 10;

// constructor
function ypSlideOutMenu(id, dir, left, top, width, height,pos)
{
	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; ';
				if(pos)
				{
					strCSS += pos+':' + left + 'px; ';
				}
				else
				{
					strCSS += 'left:' + left + 'px; ';
				}
				strCSS += 'top:' + top + 'px; ';
					strCSS += 'overflow:visible; z-index:10000; }';
					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>';

						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];
			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) / 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];

			//document.all.select.style="visibily:hidden";


			//temporarly hide all selectboxes to fix IE bug with z-index  
			if(document.all);
			{
				for (var i=0; i<document.all.length; i++) {
					o = document.all(i);
						if (o.type == 'select-one' || o.type == 'select-multiple') {
							// todo: add check for select in div?
							if (o.style) o.style.display = 'none';
						}
				}
			}


		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);

						//show all selectboxes again to fix IE bug with z-index  
						if(document.all)
						{
							for (var i=0; i<document.all.length; i++) {
								o = document.all(i);
									if (o.type == 'select-one' || o.type == 'select-multiple') {
										// todo: add check for select in div?
										if (o.style) o.style.display = 'inline';
									}
							}
						}



	};

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() { };