function valt(max,obj) {
	var id=obj.id.replace('label_', '');
	for (var i=1; i<=max; i++)
	{
        if(document.getElementById('box_'+i) != null)
        {
         document.getElementById('box_'+i).style.display="none";
         document.getElementById('label_'+i).className="";
        }

	}
	document.getElementById('box_'+id).style.display="block";
    document.getElementById('label_'+id).className = "selected";

}