// messy messy messy.
function checkBrowser(){
	this.ver=navigator.appVersion
	this.dom=document.getElementById?1:0

  var is_major = parseInt(navigator.appVersion);
  var agt = navigator.userAgent.toLowerCase();
  var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
  var is_ie3 = (is_ie && (is_major < 4));
  var is_ie4 = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
  var is_ie4up = (is_ie && (is_major >= 4));
  var is_ie5 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
  var is_ie5_5 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
  this.ie4 = is_ie4;
  this.ie5 = (is_ie && !is_ie3 && !is_ie4);
 
  // 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()

//If you want it to move faster you can set this lower:
var speed=50

//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.x; this.y;
    this.obj = obj + "Object"
    eval(this.obj + "=this")
//    return this
}


makeObj.prototype.moveIt = function(x, y) {
	this.x = x;
  this.y = y;
  // alert(this.css.top + ":" + this.y);
	this.css.left = this.x;
	this.css.top = this.y;
}

//Makes the object go up
makeObj.prototype.down = function(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
makeObj.prototype.up = function(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('divCont')
	oScroll = new makeObj('divText', 'divCont')
	oScroll.moveIt(0, 0)
	oCont.css.visibility = 'visible'
	loaded = true;
}

//Call the init on page load
onload=scrollInit;