Cacher is the code snippet organizer for pro developers

function up (){
		//alert('bla');
		   document.getElementById('divElem').scrollTop += 10;
	}
	function down () {
		    document.getElementById('divElem').scrollTop -= 10;
	}
	
	
	
	<section>
        <div id="divElem" class="bla"><div>1<div><div>2<div><div>3<div><div>4<div><div>5<div><div>6<div><div>7<div><div>8<div><div>9<div><div>10<div><div>11<div><div>12<div><div>13<div></div>
    </section>
    <aside><button onclick="up()">Up</button><button onclick="down()">Down</button></aside>