// Javascript Document
function art_select(obj) 
{

	 for (var i=1; i<=2; i++) {
				document.getElementById(i).className = 'a_s';
				document.getElementById("c"+i).style.display="none";	
	 }
	obj.className = 'art_act_sel';
	m=obj.id
	document.getElementById("c"+m).style.display="inline-block";
	}