/**********************************************************************************
ScrollText
*   Copyright (C) 2001 <a href="/dhtmlcentral/thomas_brattli.asp">Thomas Brattli</a>
*   This script was released at DHTMLCentral.com
*   Visit for more great scripts!
*   This may be used and changed freely as long as this msg is intact!
*   We will also appreciate any links you could give us.
*
*   Made by <a href="/dhtmlcentral/thomas_brattli.asp">Thomas Brattli</a>
*********************************************************************************/

function javascroll(divScroll){

	this.OUT=divScroll+'OUT';
	this.IN=divScroll+'IN';
	this.speed=50;
	var loop, timer;
	this.bw=new browser();

		function browser(){ //Browsercheck (needed)
			this.ver=navigator.appVersion
			this.agent=navigator.userAgent
			this.dom=document.getElementById?1:0
			this.opera5=this.agent.indexOf("Opera 5")>-1
			this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0;
			this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
			this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
			this.ie=this.ie4||this.ie5||this.ie6
			this.mac=this.agent.indexOf("Mac")>-1
			this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
			this.ns4=(document.layers && !this.dom)?1:0;
			this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
			return this
		}

	var px = this.bw.ns4||window.opera?"":"px";

	this.scrolltextLoaded = false;
	var ref=this;
	this.oCont = new makeObj(this.OUT);
	this.oScroll = new makeObj(this.IN,this.OUT);
	this.oScroll.moveIt(0,0);
	this.oCont.css.visibility = "visible";
	this.scrolltextLoaded = true

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

		function goDown(move){
			if (this.y>-this.scrollHeight+ref.oCont.clipHeight){
				this.moveIt(0,this.y-move)
				if (loop) setTimeout(this.obj+".down("+move+")",ref.speed)
			}
		}

		function goUp(move){
			if (this.y<0){
				this.moveIt(0,this.y-move)
				if (loop) setTimeout(this.obj+".up("+move+")",ref.speed)
			}
		}

		function moveIt(x,y){
			this.x = x
			this.y = y
			this.css.left = this.x+px
			this.css.top = this.y+px
		}

	this.scroll=function(speed){
		if (ref.scrolltextLoaded){
			loop = true;
			if (speed>0) ref.oScroll.down(speed)
			else ref.oScroll.up(speed)
    	}
	}

	this.noScroll=function(){
		loop = false
    	if (timer) clearTimeout(timer)
	}


}