/*Copyright 2008 Denis Krivov*/

function top() {
	var el = document.getElementById("content"), st = el.scrollTop;
	goTop();
	function goTop(){
		st = st - 20;
		if(st > -1){
		el.scrollTop = st;
		setTimeout(goTop, 10);
		}
		else el.scrollTop = 0;
	}
}

function down() {
	var el = document.getElementById("content"), st = el.scrollTop+40;
	el.scrollTop = st;
}

function up() {
	var el = document.getElementById("content"), st = el.scrollTop-40;
	el.scrollTop = st;
}