/*****************************************************
* 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--
*
*****************************************************/
doMenu.Registry = []
doMenu.aniLen = 250 // menu display speed
doMenu.hideDelay = 200 // menu retract delay after mouseoff
doMenu.minCPUResolution = 1

doMenu.styleMod = '';

function doMenu(id, dir, left, top, width, height, parentid, degrade, debug)
{
	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.degrade = degrade;
		this.debug = debug;
		this.sliding = false;
		this.id = id
		this.parentid = parentid
		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 = "doMenu_"+id
		eval(this.gRef+"=this")
		doMenu.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; }'
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()
// The following code originally invoked "document.write" but it caused
// a crash in IE (but not NS) when there were
// more than 31 menus total.  What crashed is that the styles that were
// declared in the css disappeared with 31 menus, where 32 menus caused
// the d.write call to fail entirely.  When I changed
// it so that the style changes were accumulated into one string
// (then at the end that string was written into the document,
// so that document.write was only called once) this solved the problem.

		doMenu.styleMod += '#' + this.id + '_container { visibility:hidden; ';
		doMenu.styleMod += 'left:' + left + 'px; ';
		doMenu.styleMod += 'z-index:50; ';
		doMenu.styleMod += 'top:' + top + 'px; ';
		doMenu.styleMod += 'overflow:hidden; }';
		doMenu.styleMod += '#' + this.id + '_container, #' + this.id + '_content { position:absolute; ';
		doMenu.styleMod += 'height:' + height + 'px; ';
		doMenu.styleMod += 'width:' + width + 'px; ';
		doMenu.styleMod += 'z-index:100; ';
		doMenu.styleMod += 'clip:rect(0 ' + width + ' ' + height + ' 0); ';
		doMenu.styleMod += '}  ';
		this.load()
	}
}

doMenu.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()", 1); // originally 1000 :: jc
	} else {
		this.container = obj1
		this.menu = obj2
		this.style = this.ns4 ? this.menu : this.menu.style
		// SEE NOTE ABOVE.  The following function call for the 31 menus bug.
		//this.setStyle()
		this.homePos = eval("0" + this.dirType + this.dim)
		this.outPos = 0
		this.accelConst = (this.outPos - this.homePos) / doMenu.aniLen / doMenu.aniLen 
		if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
		this.menu.onmouseover = new Function("doMenu.showMenu('" + this.id + "')")
		this.menu.onmouseout = new Function("doMenu.hideMenu('" + this.id + "')")
		this.endSlide()
	}
}
doMenu.showMenu = function(id, e)
{
	var reg = doMenu.Registry
	var obj = doMenu.Registry[id]
	if (obj.container) {
		obj.over = true
		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
		obj.showcount++;
		if (!obj.open && !obj.aniTimer){
			reg[id].startSlide(true)
		}
	} else {
		//alert('closed');
	}
	if (obj.ns4) obj.menu.routeEvent(Event.MOUSEOVER);
	// add rollover on call here...
	//imgOn(id)
	if (document.getElementById('frame_content')){
		//document.getElementById('frame_content').style.visibility='hidden';
	}
}

doMenu.hideMenu = function(id, e)
{
	var obj = doMenu.Registry[id]
	if (obj.container) {
//		if (obj.ie) alert('hiding: ' + id);
		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		obj.showcount--;
		obj.hideTimer = window.setTimeout("doMenu.hide('" + id + "')", doMenu.hideDelay);
	}
	if (obj.ns4) obj.menu.routeEvent(Event.MOUSEOUT);
	// add rollover off call here...
	//imgOff(id,sect)
	if (document.getElementById('frame_content')){
		//document.getElementById('frame_content').style.visibility='visible';
	}
}

doMenu.hideAll = function()
{
var reg = doMenu.Registry
for (menu in reg) {
doMenu.hide(menu);
if (menu.hideTimer) window.clearTimeout(menu.hideTimer);
}
}

doMenu.hide = function(id) {
	var obj = doMenu.Registry[id]
	var reg = doMenu.Registry
	obj.over = false
	if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
	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 = doMenu.Registry[menu].parentid
		if (pid == id) {
			if (doMenu.Registry[menu].open) close = false;
			if (!doMenu.Registry[menu].open && doMenu.Registry[menu].sliding) close = false;
		}
	}
	if (obj.open && !obj.aniTimer && close && !obj.showcount) obj.startSlide(false);
}

doMenu.prototype.startSlide = function(open) {
//ed - had to add this line below to make centering work
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()", doMenu.minCPUResolution)
}

doMenu.prototype.slide = function() {
	var elapsed = (new Date()).getTime() - this.startTime
	if (elapsed > doMenu.aniLen) this.endSlide()
	else {
		var d = Math.round(Math.pow(doMenu.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)
	}
}


doMenu.prototype.endSlide = function() {
	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 = doMenu.Registry
		for (menu in reg) {
			var pid = doMenu.Registry[menu].parentid
			if (pid == this.id) overchild = doMenu.Registry[menu].over ? true : overchild		
		}
//		if (!overchild && this.parentid && !doMenu.Registry[this.parentid].over) doMenu.hideMenu(this.parentid);
		if (!overchild && this.parentid && !doMenu.Registry[this.parentid].over) doMenu.hide(this.parentid);
	}
}

doMenu.prototype.setVisibility = function(bShow) { 
	var s = this.ns4 ? this.container : this.container.style
	s.visibility = bShow ? "visible" : "hidden"
}

doMenu.prototype.moveTo = function(p) { 
// ed - without   = this.ns4 ? p : p + "px"   it gave me problems in netscape.. it wouldnt slide.
this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}

doMenu.prototype.getPos = function(c) {
	return parseInt(this.style[c])
}

//ed - had to add these 2 lines below to make centering work
doMenu.prototype.onactivate = function() {}
doMenu.prototype.ondeactivate = function() {}

//john c. - add multiplier for height value if IE+Mac
var agent = navigator.userAgent.toLowerCase();
var menuH = 1;
if (agent.indexOf("mac") != -1 && agent.indexOf("msie") != -1){
	menuH = 1.15;
}

// menu object = function call (name, alignment, x position, y position, width, height
var menu1 = new doMenu("proj", "down", 245, 120, 210, menuH*500)
var menu1 = new doMenu("intartist", "down", 291, 120, 210, menuH*300)