/*****************************************************
 * 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 = 0
ypSlideOutMenu.hideDelay = 1000
ypSlideOutMenu.minCPUResolution = 10
// constructor
function ypSlideOutMenu(id, dir, left, top, width, height)
	{
		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.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; '
					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()
						}
			}
		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)
		{
			for( var iForm=0 ; iForm<document.forms.length ; iForm++ )
 	         {
 	         theForm = document.forms[iForm];
 	         for( var iElement=0 ; iElement<document.forms[iForm].length ; iElement++ )
 	                 {
 	         			theElement = theForm[iElement];
						if( theElement.options ){
 	                 		theElement.style.visibility="hidden";
						}
 	                 }
 	         }
			var reg = ypSlideOutMenu.Registry
				var obj = ypSlideOutMenu.Registry[id]
				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)
		{
			for( var iForm=0 ; iForm<document.forms.length ; iForm++ )
 	         {
 	         theForm = document.forms[iForm];
 	         for( var iElement=0 ; iElement<document.forms[iForm].length ; iElement++ )
 	                 {
 	         theElement = theForm[iElement];
 	                 theElement.style.visibility="visible";
 	                 }
 	         }
			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.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)
					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.onactivate = function() { }
		ypSlideOutMenu.prototype.ondeactivate = function() { }