var ie4 = (document.all)? true:false;
var ns4 = (document.layers)? true:false;
var ns6 = (document.getElementById)? true:false;

var mouseIsOver=false;

function scrollDown() {
	if (ie4) {
		this.css = document.all.content.style;
		this.elm = document.all.content;
		this.y = this.elm.offsetTop;
		this.h = this.elm.offsetHeight;
		this.scrH = this.elm.scrollHeight;

		this.parcss = document.all.container.style;
		this.parelm = document.all.container;
		this.pary = this.parelm.offsetTop;
		this.parh = this.parelm.offsetHeight;
	} else if (ns6) {
		this.css = document.getElementById("content").style;
		this.elm = document.getElementById("content");
		this.y = this.elm.offsetTop;
		this.h = this.elm.offsetHeight;
		this.scrH = this.h;
		
		this.parcss =  document.getElementById("container").style;
		this.parelm =  document.getElementById("container");
		this.pary = this.parelm.offsetTop;
		this.parh = this.parelm.offsetHeight;
	} else {
		this.css = document.layers['container'].document.layers['content'];
		this.elm = this.css;
		this.y = this.elm.top;
		this.h = this.elm.clip.height;
		this.scrH = this.h;
		
		this.parcss =  document.layers['container'];
		this.parelm =  this.parcss;
		this.pary = this.parelm.top;
		this.parh = this.parelm.clip.height;
	}
	if (this.y > -(this.scrH-this.parh)) {
		this.css.top = this.y-2;
	}
	(mouseIsOver) ? timerID =setTimeout('scrollDown()',3) : clearTimeout('timerID');
}

function scrollUp() {
	if (ie4) {
		this.css = document.all.content.style;
		this.elm = document.all.content;
		this.y = this.elm.offsetTop;
		this.h = this.elm.offsetHeight;
	} else if(ns6) {
		this.css = document.getElementById("content").style;
		this.elm = document.getElementById("content");
		this.y = this.elm.offsetTop;
		this.h = this.elm.offsetHeight;
	} else {
		this.css =  document.layers['container'].document.layers['content'];
		this.elm =  this.css;
		this.y = this.elm.top;
		this.h = this.elm.clip.height;
	}
	if (this.y < 0) {
		this.css.top = this.y+2;
	}
	(mouseIsOver) ? timerID = setTimeout('scrollUp()',3) : clearTimeout('timerID');
}