function showArticle(loc){
	if(!document.getElementById) return false;
	var btn = document.getElementById("show_"+loc);
	var par = document.getElementById("article_"+loc);
	if(btn && par){
	
		if(par.style.visibility == 'visible'){
				par.style.visibility = 'hidden';
				
		} else {
				par.style.visibility = 'visible';

		}
	}

	return false;
}