function showA(articles){
	//skjul alle shopartiklene
	var elems = document.getElementsByTagName('a');
	for(key in elems){
		if(elems[key] && elems[key].className == 'shopArticle'){
			for(key1 in elems[key].childNodes){
				if(elems[key].childNodes[key1].nodeType == '1' && elems[key].childNodes[key1].className == 'primary'){
					elems[key].childNodes[key1].style.display = 'none';
				}
			}
		}
	}

	//vis de som er valgt
	var randomnumber=Math.floor(Math.random()*articles.length)
	document.getElementById('rAid'+articles[randomnumber]).style.display = 'block';
	for(key in articles){
		if(key != randomnumber){
			document.getElementById('pAid'+articles[key]).style.display = 'block';			
		}
	}
}

function hideA(articles){
	//vis alle shoparticlene
	var elems = document.getElementsByTagName('a');
	for(key in elems){
		if(elems[key] && elems[key].className == 'shopArticle'){
			for(key1 in elems[key].childNodes){
				if(elems[key].childNodes[key1].nodeType == '1' && elems[key].childNodes[key1].className == 'primary'){
					elems[key].childNodes[key1].style.display = 'block';
				}
			}
		}
	}
	
	//skjul highlighted artikler
	for(key in articles){
		document.getElementById('rAid'+articles[key]).style.display = 'none';
		document.getElementById('pAid'+articles[key]).style.display = 'block';
	}
}