function showhide(id2)
{
	obj1 = document.getElementById(id2+"-head");
	if( obj1.className =="title" )
		obj1.className="title_active";
	else
		obj1.className="title";
	
	obj = document.getElementById(id2);
	if( obj.style.display == "block" )
		obj.style.display = "none";
	else
		obj.style.display = "block";
		
	return false;
}