/*****************************************************
 * 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
 *
 * Revised: 
 * - 08/29/2002 : added .hideAll()
 * - 04/15/2004 : added .writeCSS() to support more 
 *                than 30 menus.
 * - 28/11/2005 : Pretty-Print and pretty formatting
 *   (md)         of the code for a better maintainability
 * - 28/11/2005 : added an expand delay for the menu
 *   (md)         foldouts, reduced hide delay and
 *                animation length.
 * --youngpup--
 *****************************************************/

ypSlideOutMenu.Registry = [];
ypSlideOutMenu.aniLen = 300;
ypSlideOutMenu.expdDelay = 0;
ypSlideOutMenu.hideDelay = 150;
ypSlideOutMenu.minCPUResolution = 10;

// constructor
function ypSlideOutMenu(id, dir, left, top, width, height, parentid) {
	this.ie  = document.all ? 1 : 0;
	this.ns4 = document.layers ? 1 : 0;
	this.dom = document.getElementById ? 1 : 0;
	this.css = "";

	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.expdTimer   = false;
		this.hideTimer	 = false;
		this.aniTimer	 = false;
		this.open		 = false;
		this.over		 = false;
		this.startTime	 = 0;

		//Test
		this.sliding	 = false;
		this.parentid	 = parentid;
		this.showcount	 = 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 = "";
		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; ';
		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);
	}
	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];
	
	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);
		}
		//Test

		obj.showcount++;

		// if this menu is closed, open it.
		if (!obj.open && !obj.aniTimer) {
			var delay = ypSlideOutMenu.expdDelay;
			if (reg[obj.parentid] && reg[obj.parentid].open) {
				// submenus shall need as long to fold out as prior fold-out submenus need to fold in
				delay = ypSlideOutMenu.hideDelay;
			}
	        // schedule menu for opening.
	        obj.expdTimer = window.setTimeout("ypSlideOutMenu.Registry['"+ id + "'].startSlide(true)", delay);
		}
	}
};

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);
			window.clearTimeout(obj.expdTimer);
		}
		//test
		obj.showcount--;
		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];
	//Test
	var reg = ypSlideOutMenu.Registry;
	obj.over = false;

	if (obj.hideTimer) {
		window.clearTimeout(obj.hideTimer);
		window.clearTimeout(obj.expdTimer);
	}
	
	// flag that this scheduled event has occured.
	obj.hideTimer = 0;

	//test -- verursacht, dass menüs bei 2.ue ein-bzw garnicht mehr einfahren
	var close = true;
	
	for (menu in reg) {
	// for each child, if either
	// 1. the child is open or
	// 2. the child is closing (but hasn't closed yet)
	// then we don't close this menu.
		var pid = ypSlideOutMenu.Registry[menu].parentid;
		if(pid == id) {
			if ((ypSlideOutMenu.Registry[menu].open) || 
                (!ypSlideOutMenu.Registry[menu].open && ypSlideOutMenu.Registry[menu].sliding)) {
				close = false;
			}
		}
	}

	// if this menu is open, close it.
	//if (obj.open && !obj.aniTimer) obj.startSlide(false)
	if (obj.open && !obj.aniTimer && close && !obj.showcount) {
		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()	;
	//Test
	this.sliding = true;
	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)) {

	//Test
	this.sliding = false;
	if ((this.open && !this.over) || (!this.open && this.over) && (!this.parent || this.parent.open)) {
		this.startSlide(this.over);
	//test
	} else {
		var overchild = false;
		var reg = ypSlideOutMenu.Registry;
		for (menu in reg) {
			var pid = ypSlideOutMenu.Registry[menu].parentid;
			if (pid == this.id) {
				overchild = ypSlideOutMenu.Registry[menu].over ? true : overchild;
			}
		}
		if(!overchild && this.parentid && !ypSlideOutMenu.Registry[this.parentid].over) {
			ypSlideOutMenu.hide(this.parentid);
		}
	}
};

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() { };