/*****************************************************
* 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()
*
* --youngpup--
*****************************************************/
ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 250
ypSlideOutMenu.hideDelay = 0
ypSlideOutMenu.minCPUResolution = 10

// ===== 8/19/04 WK - NS4 onmouseout bug =====//
// after triggering an onmouseover event on a menu link
// a onmouseout event an another link that isn't succeeded by
// another mouseover event will trigger the hideMenu() function
// solved by tracking mouse coords and checking if mouse is still
// within the bounds of the menu


// ===== track mouse coords =====//
if (document.layers) {
	var x, y									// 8/19/04 WK
	document.captureEvents(Event.MOUSEMOVE)		// 8/19/04 WK
	document.onmousemove = getPosition			// 8/19/04 WK
}


// constructor
function ypSlideOutMenu(id, dir, offsetLeft, offsetTop, width, height, img, state) {
	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.img = img
		this.width = width		// 8/19/04 WK
		this.left = 0			// 11/3/04 WK
		this.top = 0			// 11/3/04 WK
		this.height = height	// 8/19/04 WK
		this.offsetLeft = offsetLeft	// 8/19/04 WK
		this.offsetTop = offsetTop	// 8/19/04 WK
		this.state = state // 3/11/05 WK
		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 = '<style type="text/css">';
		strCSS += '#' + this.id + 'Container { visibility:hidden; text-align:left; '
		strCSS += 'left:0px; '
		strCSS += 'top:0px; '
		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 += '}'
		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 
		// WK 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, link) {
	var reg = ypSlideOutMenu.Registry
	var obj = ypSlideOutMenu.Registry[id]
	if (link) obj.setMenuPosition(link)	// 11/3/04 WK
	if (obj.container) {
		obj.over = true
		for (menu in reg) 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.ns4) if (!obj.inMenu(id)) return false	// 8/19/04 WK
		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		obj.hideTimer = window.setTimeout("ypSlideOutMenu.hide('" + id + "')", ypSlideOutMenu.hideDelay);
	}
}

// ===== 8/19 WK - check if mouse is still in menu ===== //
ypSlideOutMenu.prototype.inMenu = function(id) {
	var obj = ypSlideOutMenu.Registry[id];
	if (x < obj.left || x > (obj.left + obj.width) || y < obj.top || y > (obj.top + obj.height)) return true; else return false;
}

// ===== 8/19 WK - put mouse coords in global var ===== //
function getPosition(e) {
	x = e.pageX;
	y = e.pageY;
	//status = x + ', ' + y;
}



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)
	if (this.ie || this.dom) this.setSelectList()	// WK 12/22/04 invoke show/hide select list function
	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.setMenuPosition = function(link) {	// 11/3/04 WK
	var topnavImg = document.images[this.img];
	var offsetTrail = topnavImg;
	var offsetLeft = 0;
	var offsetTop = 0;
	
	while (offsetTrail) {
		offsetLeft += offsetTrail.offsetLeft;
		offsetTop += offsetTrail.offsetTop;
		offsetTrail = offsetTrail.offsetParent;
	}

	if (this.ns4) {
		this.left = link.x;
		this.top = link.y;
		document.layers[this.id + 'Container'].left = link.x + this.offsetLeft;
		document.layers[this.id + 'Container'].top = link.y + this.offsetTop;
	} else {
		document.getElementById(this.id + 'Container').style.left = offsetLeft + this.offsetLeft + 'px';
		document.getElementById(this.id + 'Container').style.top = offsetTop + topnavImg.height + this.offsetTop + 'px';
	}
}


// ===== 12/22/04 WK - show/hide select lists ===== //
ypSlideOutMenu.prototype.setSelectList = function() {
	var state = 'visible'
	for (var menu in ypSlideOutMenu.Registry) {
		if (ypSlideOutMenu.Registry[menu].open) state = 'hidden'
		for (var i = 0; i < document.forms.length; ++i) {
			for (var j = 0; j < document.forms[i].elements.length; ++j) {
				if (document.forms[i].elements[j].type == 'select-one') document.forms[i].elements[j].style.visibility = state;
			}
		}
	}
}



ypSlideOutMenu.prototype.onactivate = function() { if (this.state) rollover(this.img, true) }
ypSlideOutMenu.prototype.ondeactivate = function() { if (this.state) rollover(this.img, false) }