sl.Registry = []
sl.aniLen = 200
sl.hideDelay = 300
sl.minCPUResolution = 5
function sl(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 = "sl_"+id
		eval(this.gRef+"=this")
		sl.Registry[id] = this
		var d = document
		d.write('<style type="text/css">')
		d.write('#' + this.id + 'Container { visibility:hidden; ')
		d.write('left:' + left + 'px; ')
		d.write('top:' + top + 'px; ')
		d.write('z-index:3000; ')
		d.write('overflow:hidden; }')
		d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; ')
		d.write('width:' + width + 'px; ')
		d.write('height:' + height + 'px; ')
		d.write('clip:rect(0 ' + width + ' ' + height + ' 0); ')
		d.write('}')
		d.write('</style>')

		this.load()
	}
}
sl.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.m		= obj2
		this.style		= this.ns4 ? this.m : this.m.style
		this.homePos	= eval("0" + this.dirType + this.dim)
		this.outPos		= 0
		this.accelConst	= (this.outPos - this.homePos) / sl.aniLen / sl.aniLen 
		if (this.ns4) this.m.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
		this.endsl()
	}
}

sl.s = function(id)
{
	var reg = sl.Registry
	var obj = sl.Registry[id]
	if (obj.container) {
		obj.over = true
		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
		if (!obj.open && !obj.aniTimer) reg[id].startsl(true)
	}
}
sl.h = function(id)
{
	var obj = sl.Registry[id]
	   if (obj.container) {
		   if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		   obj.hideTimer = window.setTimeout("sl.hide('" + id + "')", sl.hideDelay);
	   }
}
sl.hide = function(id)
{
	var obj = sl.Registry[id]
	obj.over = false
	if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
	obj.hideTimer = 0
	if (obj.open && !obj.aniTimer) obj.startsl(false)
}
sl.prototype.startsl = 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 + ".sl()", sl.minCPUResolution)
}
sl.prototype.sl = function() {
	var elapsed = (new Date()).getTime() - this.startTime
	if (elapsed > sl.aniLen) this.endsl()
	else {
		var d = Math.round(Math.pow(sl.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)
	}
}
sl.prototype.endsl = 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.startsl(this.over)
	}
}
sl.prototype.setVisibility = function(bShow) { 
	var s = this.ns4 ? this.container : this.container.style
	s.visibility = bShow ? "visible" : "hidden"
}
sl.prototype.moveTo = function(p) { 
	this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : (p) + "px"
}
sl.prototype.getPos = function(c) {
	return parseInt(this.style[c])
}
sl.prototype.onactivate		= function() { }
sl.prototype.ondeactivate	= function() { }