<!--
/* Copyright 2001 : Atout Développement */
/* Auteur : Yvan Vanwynsberghe		      */

var ns4 = (document.layers)? true:false;   			//NS 4 
var ie4 = (document.all)? true:false;   			//IE 4 
var dom = (document.getElementById)? true:false;   	//DOM
var pix = (ns4) ? "" : "px";


function GetNS4Object(MyID,MyDocument) {
	
	var MyObject= eval('MyDocument.'+MyID);
	
	if (!(MyObject)) {
		for(var i=0;i<MyDocument.layers.length;i++) {
			MyObject = GetNS4Object(MyID,MyDocument.layers[i].document);
			if (MyObject) break;
		}
	}	
	
	return MyObject;
}


function GetObject(MyID) {
	if (dom) return document.getElementById(MyID);
	if (ie4) return document.all[MyID];
	if (ns4) return GetNS4Object(MyID,window.document);
	return 0;
} 

function GetCSS(MyObject) {
	if (dom || ie4) return MyObject.style;
	else if (ns4) return MyObject;
	else return 0;
}

function GetHeight(MyObject) { 
	if (dom || ie4) return MyObject.offsetHeight;
	else if (ns4) return MyObject.clip.height;
	else return 0;
}

function GetWidth(MyObject) { 
	if (dom || ie4) return MyObject.offsetWidth;
	else if (ns4) return MyObject.clip.width;
	else return 0;
}

function GetTop(MyObject) { 
	if (dom || ie4) 
	return (MyObject.offsetTop);
	if (ns4) return MyObject.y;
	return 0;
}

function GetLeft(MyObject) { 
	if (dom || ie4) return MyObject.offsetLeft;
	if (ns4) return MyObject.x;
	return 0;
}

function MoveObject(myX,myY) {
	this.X = myX;
	this.Y = myY;
	this.CSS.left=this.X+pix;
	this.CSS.top=this.Y+pix;
}

function MoveObjectUp(mystep) {
	this.Y -= mystep;
	this.CSS.top=this.Y+pix;
}

function MoveObjectDown(mystep) {
	this.Y += mystep;
	this.CSS.top=this.Y+pix;
}

function CreateObject(DivId,MyObject) {
	if (MyObject)
		this.Object = MyObject;
	else
		this.Object = GetObject(DivId);

	if (this.Object) {
		this.CSS = GetCSS(this.Object);
		this.Height = GetHeight(this.Object);
		this.Width = GetWidth(this.Object);
		this.X = GetTop(this.Object);
		this.Y = GetLeft(this.Object);
		this.Move = MoveObject;
		this.Up = MoveObjectUp;
		this.Down = MoveObjectDown;
	}
	
	return this;
}

function DelTextNode(MyObject) {
	var node = MyObject.firstChild;
	var next;

	while (node) {
		next = node.nextSibling;
		if (node.nodeType == 3)
		MyObject.removeChild(node);
		node = next;
	}
}

function CreateChildren(MyObject,HoriSpacer,VertSpacer) {
	var i=0;
	var MyChildren = new Array();
	
	if (dom) {
		DelTextNode(MyObject);
		for (i=0;i<MyObject.childNodes.length;i++) {
			MyChildren[i] = new CreateObject(0,MyObject.childNodes[i]);
			MyChildren[i].Move(i*HoriSpacer,i*VertSpacer);
		}
		
		return MyChildren;
	}

	if (ie4) {
		for (i=0;i<MyObject.children.length;i++) {
			MyChildren[i] = new CreateObject(0,MyObject.children(i));
			MyChildren[i].Move(i*HoriSpacer,i*VertSpacer);
		}
		
		return MyChildren;
	}
	
	if (ns4) {
		for (i=0;i<MyObject.document.layers.length;i++) {
			MyChildren[i] = new CreateObject(0,MyObject.layers[i]);
			MyChildren[i].Move(i*HoriSpacer,i*VertSpacer);
		}
		
		return MyChildren;   
	}
}

function ScrollUp() {
	var MyInterval = this.Interval1;
	this.stop();
	
	if (this.Children[this.FirstChildren].Y<-this.threshold) {
		MyInterval = this.Interval2;
		this.Children[this.FirstChildren].Down(this.TotalHeight);
		
		if (this.FirstChildren<this.Children.length-1) {
			this.FirstChildren++;
			this.threshold += this.Children[this.FirstChildren].Height;
		}
		else {
			this.FirstChildren = 0;
			this.threshold = this.Children[this.FirstChildren].Height+this.Spacer;
		}
	}

	for (var i=0;i<this.Children.length;i++) {
		this.Children[i].Up(this.Step);
	}
	
	this.ProcessId = setTimeout(this.name + '.start()', MyInterval);
}


function ScrollStop() {
	if (this.ProcessId)
		clearTimeout(this.ProcessId);

	this.ProcessId = null;
}

function Box(BoxName, DivId, myStep, myTempo1, myTempo2, mySpacer) {
	this.name     = BoxName;
	this.Step  = myStep ? myStep : 1;
	this.Interval1 = myTempo1 ? myTempo1 : 100;
	this.Interval2 = myTempo2 ? myTempo2 : 100;
	this.Spacer = mySpacer ? mySpacer : 0;
	this.ProcessId	= null;
	this.Container = new CreateObject(DivId);
	this.Children = new CreateChildren(this.Container.Object,0,mySpacer);
	this.FirstChildren = 0;
	this.LastChildren = this.Children.length-1;
	this.threshold = this.Children[0].Height+this.Spacer;
	var myHeight = 0;
	
	for (var i=0;i<this.Children.length;i++) {
		myHeight += (this.Children[i].Height + this.Spacer);
	}
	
	this.TotalHeight = myHeight;
	this.Container.visibility = 'visible';
}

Box.prototype.start = ScrollUp;
Box.prototype.stop = ScrollStop;
//-->