/*****************************************************
 * 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--

 * Überarbeitet typo.intervation.de 2007
 *****************************************************/

ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 450
ypSlideOutMenu.hideDelay = 50
ypSlideOutMenu.minCPUResolution = 10

// constructor
function ypSlideOutMenu(id, dir, left, top, width, height, parentid)
{
	if (document.getElementById(id+"Container") != undefined) {
		this.ie  = document.all ? 1 : 0
		this.ns4 = document.layers ? 1 : 0
		this.dom = document.getElementById ? 1 : 0
			//alert(id+"Container");
		if (this.ie || this.ns4 || this.dom) {
			var m_hight = document.getElementById(id+"Container").offsetHeight;
			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.sliding	 = false
			this.parentid	 = parentid
			this.showcount	 = 0
	
			// global reference to this object
			this.gRef = "ypSlideOutMenu_"+id
			eval(this.gRef+"=this")
			this.initleft = left
			this.inittop = top
			this.initwidth = width
			this.initheight = height
			this.showcount = 0;
			// 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; text-align:left}'
			strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; '
			strCSS += 'width:' + width + 'px;padding-bottom:20px;margin-left:1px; '
			strCSS += 'height:' + m_hight + 'px; '
			strCSS += 'clip:rect(0 ' + width + ' ' + m_hight + ' 0); '
			strCSS += '}'
			strCSS += '</style>';
			d.write(strCSS)
			this.load()
		}
	}
}

ypSlideOutMenu.set_level_one = function(vert) {
	ypSlideOutMenu.horz_vert = vert;

}
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() {
	if (document.getElementById(this.id+"Container") != undefined) {
		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()", 1000)
		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, layerid, idw, level)
{
	if (document.getElementById(id+"Container") != undefined) {
		var reg = ypSlideOutMenu.Registry
		var obj = ypSlideOutMenu.Registry[id]
		if(layerid) {
			idw.onactivate = function() { repositionMenu(idw, layerid, level); }
		}
		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) }
			obj.showcount++;
			// if this menu is closed, open it.
			if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
		}
	}
}

ypSlideOutMenu.hideMenu = function(id)
{
	if (document.getElementById(id+"Container") != undefined) {
		// 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.showcount--;
			obj.hideTimer = window.setTimeout("ypSlideOutMenu.hide('" + id + "')", ypSlideOutMenu.hideDelay);
		}
	}
}

ypSlideOutMenu.hide = function(id)
{
	if (document.getElementById(id+"Container") != undefined) {
		var obj = ypSlideOutMenu.Registry[id]
		var reg = ypSlideOutMenu.Registry
		obj.over = false
		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		// flag that this scheduled event has occured.
		obj.hideTimer = 0
		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) close = false;
				if (!ypSlideOutMenu.Registry[menu].open && ypSlideOutMenu.Registry[menu].sliding) close = false;
			}
		}
		// if this menu is open, close it.
		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()
	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() {
	if (document.getElementById(this.id+"Container") != undefined) {
		this.aniTimer = window.clearTimeout(this.aniTimer)
		this.moveTo(this.open ? this.outPos : this.homePos)
		if (!this.open) this.setVisibility(false)
		this.sliding = false;
		if ((this.open && !this.over) || (!this.open && this.over) && (!this.parent || this.parent.open)) {
			this.startSlide(this.over)
		} 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() { }

function getPosition(element) {
/* der Aufruf dieser Funktion ermittelt die absoluten Koordinaten
   des Objekts element */

  var elem=element,tagname="",x=0,y=0;
  /* solange elem ein Objekt ist und die Eigenschaft offsetTop enthaelt
   wird diese Schleife fuer das Element und all seine Offset-Eltern ausgefuehrt */

  while ((typeof(elem)=="object")&&(typeof(elem.tagName)!="undefined"))
  {
	y+=elem.offsetTop;	 /* Offset des jeweiligen Elements addieren */
	x+=elem.offsetLeft;	/* Offset des jeweiligen Elements addieren */
	tagname=elem.tagName.toUpperCase(); /* tag-Name ermitteln, Grossbuchstaben */
	/* wenn beim Body-tag angekommen elem fuer Abbruch auf 0 setzen */
	if (tagname=="HTML") {
	  elem=0;
	}
	if (tagname=="BODY" && navigator.userAgent.indexOf("Opera")>-1) {
		elem=0;
	}
	if (tagname=="BODY" && !navigator.userAgent.indexOf("Opera")>-1) {
		elem=0;
	}
	/* wenn elem ein Objekt ist und offsetParent enthaelt
   Offset-Elternelement ermitteln */
	if (typeof(elem)=="object")
	  if (typeof(elem.offsetParent)=="object")
		elem=elem.offsetParent;
  }
/* Objekt mit x und y zurueckgeben */
	position=new Object();
	position.x=x;
	position.y=y;
	return position;
}
// this function repositions a menu to the speicified offset from center
function repositionMenu(menu, offset, level) {
	if (menu.container != undefined) {
		/* Element-Objekt zur ID ermitteln */
		element=document.getElementById(offset);
		 //alert(document.getElementById(offset).pageXOffset);
	/* Position bestimmen und melden */
		//alert(document.getElementById(offset).offsetWidth);
	// the new left position should be the center of the window + the offset
		var newLeft = getPosition(element);
	
		if(level)
			var erx = newLeft.x+document.getElementById(offset).offsetWidth;
		else {
			if(ypSlideOutMenu.horz_vert == "down") {
				erx = newLeft.x;
				newLeft.y = newLeft.y+ element.offsetHeight;
			}
			else {
				erx = newLeft.x + element.offsetWidth;
				newLeft.y = newLeft.y;
			}
		}
	// setting the left position in netscape is a little different than IE
		menu.container.style ? menu.container.style.left = erx + "px" : menu.container.left = newLeft.x;
		menu.container.style ? menu.container.style.top = newLeft.y + "px" : menu.container.top = newLeft.y;
	}
}

// this function calculates the window's width - different for IE and netscape
function getWindowWidth()
{
	return window.innerWidth ? window.innerWidth : document.body.offsetWidth;
}