/********************************************************************************
Copyright (C) 1999 Thomas Brattli
This script is made by and copyrighted to Thomas Brattli at www.bratta.com
Visit for more great scripts. This may be used freely as long as this msg is intact!
I will also appriciate any links you could give me.
********************************************************************************/
//Default browsercheck, added to all scripts!
function checkBrowser(){
	this.ver=navigator.appVersion
	this.dom=document.getElementById?1:0
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
	this.ie4=(document.all && !this.dom)?1:0;
	this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5)
	return this
}
bw=new checkBrowser()
/*****************

You set the width and height of the divs inside the style tag, you only have to
change the layer5, Remeber to set the clip the same as the width and height.
You can remove the divUp and divDown layers if you want. 
This script should also work if you make the layer5 position:relative.
Then you should be able to place this inside a table or something. Just remember
that Netscape crashes very easily with relative positioned divs and tables.

Updated with a fix for error if moving over layer before pageload.

****************/


//If you want it to move faster you can set this lower:
var speed=40

//Sets variables to keep track of what's happening
var loop, timer

//Object constructor
function makeObj(obj,nest){
    nest=(!nest) ? '':'document.'+nest+'.'
	this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0;
  	this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0;
	this.scrollHeight=bw.ns4?this.css.document.height:this.el.offsetHeight
	this.clipHeight=bw.ns4?this.css.clip.height:this.el.offsetHeight
	this.up=goUp;this.down=goDown;
	this.moveIt=moveIt; this.x; this.y;
    this.obj = obj + "Object"
    eval(this.obj + "=this")
    return this
}
function moveIt(x,y){
	this.x=x;this.y=y
	this.css.left=this.x
	this.css.top=this.y
}

//Makes the object go up
function goDown(move){
	if(this.y>-this.scrollHeight+oCont.clipHeight){
		this.moveIt(0,this.y-move)
			if(loop) setTimeout(this.obj+".down("+move+")",speed)
	}
}
//Makes the object go down
function goUp(move){
	if(this.y<0){
		this.moveIt(0,this.y-move)
		if(loop) setTimeout(this.obj+".up("+move+")",speed)
	}
}

//Calls the scrolling functions. Also checks whether the page is loaded or not.
function scroll(speed){
	if(loaded){
		loop=true;
		if(speed>0) oScroll.down(speed)
		else oScroll.up(speed)
	}
}

//Stops the scrolling (called on mouseout)
function noScroll(){
	loop=false
	if(timer) clearTimeout(timer)
}
//Makes the object
var loaded;
function scrollInit(){
	oCont=new makeObj('layer5')
	oScroll=new makeObj('layer6','layer5')
	oScroll.moveIt(0,0)
	oCont.css.visibility='visible'
	loaded=true;
}
//Call the init on page load
onload=scrollInit;