function toggle_visibility(id) 
{
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }

function change(id)
{
	if (id == "container_377")
		document.getElementById('container_377').className="shown";
	else
		document.getElementById('container_377').className="hidden";
		
	if (id == "container_378")
		document.getElementById('container_378').className="shown";
	else
		document.getElementById('container_378').className="hidden";
		
	if (id == "container_379")
		document.getElementById('container_379').className="shown";
	else
		document.getElementById('container_379').className="hidden";
}