var d=document;
function show_contacts()
{
	set_class('all_objects',			'contacts_objects');
	set_class('show_all_btn',			'locallink'		);
	set_class('show_comments_btn',		'locallink'		);
	set_class('show_contacts_btn',		''				);
}

function show_comments()
{
	set_class('all_objects',			'comment_objects'		);
	set_class('show_all_btn',			'locallink'				);
	set_class('show_contacts_btn',		'locallink'				);
	set_class('show_comments_btn',		''						);
}

function show_all()
{
	set_class('all_objects',			'all_objects'			);
	set_class('show_contacts_btn',		'locallink'				);
	set_class('show_comments_btn',		'locallink'				);
	set_class('show_all_btn',			''						);
}

function set_class(identifier, classname) { var o=d.getElementById(identifier); o.className=classname; return o;}