/*****************************************************
 * 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 = 1
ypSlideOutMenu.hideDelay = 1
ypSlideOutMenu.minCPUResolution = 10

// constructor
function ypSlideOutMenu(id, dir, left, top, width, height, type)
{
	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
		this.aniLength	 = type == "flagship" ? (ypSlideOutMenu.aniLen * 1/2) : ypSlideOutMenu.aniLen

		// 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 head = document.documentElement.firstChild;
        
        var style = null;
        for(var i=0;i<head.childNodes.length; i++)
        {
            var e = head.childNodes[i];
            if (e.tagName == 'STYLE' && e.id == 'ypSlideOutMenusC')
            {
                style = e;
            }
        }
        if (style == null)
        {
            var style = document.createElement('STYLE');
            style.id = 'ypSlideOutMenusC';
    	    style.setAttribute('type', 'text/css');
            document.documentElement.firstChild.appendChild(style);
        }
        		
	    var textdata = '';
	    textdata = textdata + '#' + this.id + 'Container { visibility:hidden; ';
	    textdata = textdata + 'left:' + left + 'px; ';
	    textdata = textdata + 'top:' + top + 'px; ';
	    textdata = textdata + 'overflow:hidden; }';
	    textdata = textdata + '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; ';
	    textdata = textdata + 'width:' + width + 'px; ';
	    textdata = textdata + 'height:' + height + 'px; ';
	    textdata = textdata + 'clip:rect(0 ' + width + ' ' + height + ' 0); ';
	    textdata = textdata + 'z-index: 9999; ';
	    textdata = textdata + '}';

	    addCss(textdata);

		this.load()
	}
}

function addCss(cssCode) {
    var cssCodeComplete = cssCode;
    var head = document.getElementsByTagName("head")[0];
    var styleElement = document.getElementById('ypSlideOutMenusC');
    if (styleElement!=null)
    {
        cssCodeComplete = styleElement.innerHTML + cssCode;
        head.removeChild(styleElement);
    }
    styleElement = document.createElement("style");
    styleElement.type = "text/css";
    styleElement.id = 'ypSlideOutMenusC';
    if (styleElement.styleSheet) {
        styleElement.styleSheet.cssText = cssCodeComplete;
    } else {
        styleElement.appendChild(document.createTextNode(cssCodeComplete));
    }
    head.appendChild(styleElement);
}

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) / this.aniLength / this.aniLength 

		// 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

		// 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)
}

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 > this.aniLength) this.endSlide()
	else {
		var d = Math.round(Math.pow(this.aniLength-elapsed, 2) * this.accelConst)
		if (this.open && this.dirType == "-")		{d = -d;this.moveTo(d);}
		else if (this.open && this.dirType == "+")	{d = -d;this.moveTo(d);}
		else if (!this.open && this.dirType == "-")	{this.endSlide();}
		else										{this.endSlide();}
		    
	}
	this.shim(this.open);
}

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.shim = function(bShow) { 
	var divref = document.getElementById(this.id + 'Container');
	var ifrref = document.getElementById(this.id + 'Shim');
	
	if (bShow){
		ifrref.style.width = divref.offsetWidth;
		ifrref.style.height = divref.offsetHeight;
		ifrref.style.top = divref.offsetTop;
		ifrref.style.left = divref.offsetLeft;
		ifrref.style['z-index'] = divref.style['zindex'] - 1;
		ifrref.style.display = "";
	} else {
		ifrref.style.display = "none";
	}
}
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() { }