ns4 = (document.layers) ? true:false;
ie4 = (document.all) ? true:false;


function divstyleMembers(divName)
{
	if (document.layers)
	{
		return document.layers[divName];
	}
	else
	{
		if (document.all.tags("div")[divName])
		{
			return document.all.tags("div")[divName].style;
		}
	}
}

function toggle(layerName, mode)
{

	if(divstyleMembers(layerName))
	{
		if (mode == "on")
		{	
			divstyleMembers(layerName).visibility = "visible";
		} else {
			divstyleMembers(layerName).visibility = "hidden";
		}
	}
	return false;
}

function initScroller(strLayerWindowID, strLayerContentID, strLayerArrowsID)
{
	if (divstyleMembers(strLayerWindowID)) {
		scroller = new MiniScroll(new DynLayer(strLayerWindowID), new DynLayer(strLayerContentID));	
		if (scroller.enableVScroll) {
			scroller.inc = 2;
			scroller.speed = (is.ns) ? 5 : 10;
			toggle(strLayerArrowsID, "on");
		} else {
			toggle(strLayerArrowsID, "off");
		}		
	}
	return false;
}

function MiniScroll(window,content) {
	this.window = window
	this.content = content
	this.inc = 8
	this.speed = 20
	this.contentHeight = (is.ns)? this.content.doc.height : this.content.elm.scrollHeight
	this.contentWidth = (is.ns)? this.content.doc.width : this.content.elm.scrollWidth
	this.up = MiniScrollUp
	this.down = MiniScrollDown
	this.left = MiniScrollLeft
	this.right = MiniScrollRight
	this.stop = MiniScrollStop
	this.activate = MiniScrollActivate
	this.activate(this.contentWidth,this.contentHeight)
	return false;}

function MiniScrollActivate() {
	this.offsetHeight = this.contentHeight-this.window.h
	this.offsetWidth = this.contentWidth-this.window.w
	this.enableVScroll = (this.offsetHeight>0)
	this.enableHScroll = (this.offsetWidth>0)
	return false;
}
function MiniScrollUp() {
	if (this.enableVScroll) this.content.slideTo(null,0,this.inc,this.speed)
	return false;
}
function MiniScrollDown() {
	if (this.enableVScroll) this.content.slideTo(null,-this.offsetHeight,this.inc,this.speed)
	return false;
}
function MiniScrollLeft() {
	if (this.enableHScroll) this.content.slideTo(0,null,this.inc,this.speed)
	return false;
}
function MiniScrollRight() {
	if (this.enableHScroll) this.content.slideTo(-this.offsetWidth,null,this.inc,this.speed)
	return false;
}
function MiniScrollStop() {
	this.content.slideActive = false
	return false;
}

function DynLayer(id,nestref,frame) {
	if (!is.ns5 && !DynLayer.set && !frame) DynLayerInit()
	this.frame = frame || self
	if (is.ns) {
		if (is.ns4) {
			if (!frame) {
				if (!nestref) var nestref = DynLayer.nestRefArray[id]
				if (!DynLayerTest(id,nestref)) return
				this.css = (nestref)? eval("document."+nestref+".document."+id) : document.layers[id]
			}
			else this.css = (nestref)? eval("frame.document."+nestref+".document."+id) : frame.document.layers[id]
			this.elm = this.event = this.css
			this.doc = this.css.document
		}
		else if (is.ns5) {
			this.elm = document.getElementById(id)
			this.css = this.elm.style
			this.doc = document
		}
		this.x = this.css.left
		this.y = this.css.top
		this.w = this.css.clip.width
		this.h = this.css.clip.height
	}
	else if (is.ie) {
		this.elm = this.event = this.frame.document.all[id]
		this.css = this.frame.document.all[id].style
		this.doc = document
		this.x = this.elm.offsetLeft
		this.y = this.elm.offsetTop
		this.w = (is.ie4)? this.css.pixelWidth : this.elm.offsetWidth
		this.h = (is.ie4)? this.css.pixelHeight : this.elm.offsetHeight
	}
	this.id = id
	this.nestref = nestref
	this.obj = id + "DynLayer"
	eval(this.obj + "=this")
}
function DynLayerMoveTo(x,y) {
	if (x!=null) {
		this.x = x
		if (is.ns) this.css.left = this.x
		else this.css.pixelLeft = this.x
	}
	if (y!=null) {
		this.y = y
		if (is.ns) this.css.top = this.y
		else this.css.pixelTop = this.y
	}
	return false
}
function DynLayerMoveBy(x,y) {
	this.moveTo(this.x+x,this.y+y)
	return false
}
function DynLayerShow() {
	this.css.visibility = (is.ns4)? "show" : "visible"
	return false
}
function DynLayerHide() {
	this.css.visibility = (is.ns4)? "hide" : "hidden"
	return false
}
DynLayer.prototype.moveTo = DynLayerMoveTo
DynLayer.prototype.moveBy = DynLayerMoveBy
DynLayer.prototype.show = DynLayerShow
DynLayer.prototype.hide = DynLayerHide
DynLayerTest = new Function('return true')

function DynLayerInit(nestref) {
	if (!DynLayer.set) DynLayer.set = true
	if (is.ns) {
		if (nestref) ref = eval('document.'+nestref+'.document')
		else {nestref = ''; ref = document;}
		for (var i=0; i<ref.layers.length; i++) {
			var divname = ref.layers[i].name
			DynLayer.nestRefArray[divname] = nestref
			var index = divname.indexOf("Div")
			if (index > 0) {
				eval(divname.substr(0,index)+' = new DynLayer("'+divname+'","'+nestref+'")')
			}
			if (ref.layers[i].document.layers.length > 0) {
				DynLayer.refArray[DynLayer.refArray.length] = (nestref=='')? ref.layers[i].name : nestref+'.document.'+ref.layers[i].name
			}
		}
		if (DynLayer.refArray.i < DynLayer.refArray.length) {
			DynLayerInit(DynLayer.refArray[DynLayer.refArray.i++])
		}
	}
	else if (is.ie) {
		for (var i=0; i<document.all.tags("DIV").length; i++) {
			var divname = document.all.tags("DIV")[i].id
			var index = divname.indexOf("Div")
			if (index > 0) {
				eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")')
			}
		}
	}
	return true
}
DynLayer.nestRefArray = new Array()
DynLayer.refArray = new Array()
DynLayer.refArray.i = 0
DynLayer.set = false

function DynLayerSlideTo(endx,endy,inc,speed,fn) {
	if (endx==null) endx = this.x
	if (endy==null) endy = this.y
	var distx = endx-this.x
	var disty = endy-this.y
	this.slideStart(endx,endy,distx,disty,inc,speed,fn)
	return false
}
function DynLayerSlideBy(distx,disty,inc,speed,fn) {
	var endx = this.x + distx
	var endy = this.y + disty
	this.slideStart(endx,endy,distx,disty,inc,speed,fn)
	return false
}
function DynLayerSlideStart(endx,endy,distx,disty,inc,speed,fn) {
	if (this.slideActive) return
	if (!inc) inc = 10
	if (!speed) speed = 20
	var num = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2))/inc
	if (num==0) return
	var dx = distx/num
	var dy = disty/num
	if (!fn) fn = null
	this.slideActive = true
	this.slide(dx,dy,endx,endy,num,1,speed,fn)
}
function DynLayerSlide(dx,dy,endx,endy,num,i,speed,fn) {
	if (!this.slideActive) return
	if (i++ < num) {
		this.moveBy(dx,dy)
		this.onSlide()
		if (this.slideActive) setTimeout(this.obj+".slide("+dx+","+dy+","+endx+","+endy+","+num+","+i+","+speed+",\""+fn+"\")",speed)
		else this.onSlideEnd()
	}
	else {
		this.slideActive = false
		this.moveTo(endx,endy)
		this.onSlide()
		this.onSlideEnd()
		eval(fn)
	}
}
function DynLayerSlideInit() {
	return false
}
DynLayer.prototype.slideInit = DynLayerSlideInit
DynLayer.prototype.slideTo = DynLayerSlideTo
DynLayer.prototype.slideBy = DynLayerSlideBy
DynLayer.prototype.slideStart = DynLayerSlideStart
DynLayer.prototype.slide = DynLayerSlide
DynLayer.prototype.onSlide = new Function()
DynLayer.prototype.onSlideEnd = new Function()

function DynLayerClipInit(clipTop,clipRight,clipBottom,clipLeft) {
	if (is.ie) {
		if (arguments.length==4) this.clipTo(clipTop,clipRight,clipBottom,clipLeft)
		else if (is.ie4) this.clipTo(0,this.css.pixelWidth,this.css.pixelHeight,0)
	}
	return false
}
function DynLayerClipTo(t,r,b,l) {
	if (t==null) t = this.clipValues('t')
	if (r==null) r = this.clipValues('r')
	if (b==null) b = this.clipValues('b')
	if (l==null) l = this.clipValues('l')
	if (is.ns) {
		this.css.clip.top = t
		this.css.clip.right = r
		this.css.clip.bottom = b
		this.css.clip.left = l
	}
	else if (is.ie) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)"
	return false
}
function DynLayerClipBy(t,r,b,l) {
	this.clipTo(this.clipValues('t')+t,this.clipValues('r')+r,this.clipValues('b')+b,this.clipValues('l')+l)
	return false
}
function DynLayerClipValues(which) {
	if (is.ie) var clipv = this.css.clip.split("rect(")[1].split(")")[0].split("px")
	if (which=="t") return (is.ns)? this.css.clip.top : Number(clipv[0])
	if (which=="r") return (is.ns)? this.css.clip.right : Number(clipv[1])
	if (which=="b") return (is.ns)? this.css.clip.bottom : Number(clipv[2])
	if (which=="l") return (is.ns)? this.css.clip.left : Number(clipv[3])
	return false
}
DynLayer.prototype.clipInit = DynLayerClipInit
DynLayer.prototype.clipTo = DynLayerClipTo
DynLayer.prototype.clipBy = DynLayerClipBy
DynLayer.prototype.clipValues = DynLayerClipValues

function DynLayerWrite(html) {
	if (is.ns) {
		this.doc.open()
		this.doc.write(html)
		this.doc.close()
	}
	else if (is.ie) {
		this.event.innerHTML = html
	}
	return false
}
DynLayer.prototype.write = DynLayerWrite

function BrowserCheck() {
	var b = navigator.appName
	if (b=="Netscape") this.b = "ns"
	else if (b=="Microsoft Internet Explorer") this.b = "ie"
	else this.b = b
	this.version = navigator.appVersion
	this.v = parseInt(this.version)
	this.ns = (this.b=="ns" && this.v>=4)
	this.ns404 = (this.b=="ns" && navigator.appVersion.substring(0,3)=="4.0")
	this.ns4 = (this.b=="ns" && this.v==4)
	this.ns5 = (this.b=="ns" && this.v==5)
	this.ie = (this.b=="ie" && this.v>=4)
	this.ie4 = (this.version.indexOf('MSIE 4')>0)
	this.ie5 = (this.version.indexOf('MSIE 5')>0)
	this.min = (this.ns||this.ie)
	return false
}
is = new BrowserCheck()