function set_zone( zone )
{
	document.filter.zone.value = zone;
	document.filter.submit();
}
function select_connected_pane( name )
{
	var button_elem = document.getElementById( "left_pane_" + name + "_button" );
	if ( !button_elem )
	{
		name = "online";
		button_elem = document.getElementById( "left_pane_" + name + "_button" );
	}
	
	// hide all elements
	elem = document.getElementById( "left_pane_online" );
	elem.style.display = "none";
	elem = document.getElementById( "left_pane_friend" );
	elem.style.display = "none";
	elem = document.getElementById( "left_pane_block" );
	elem.style.display = "none";
	
	elem = document.getElementById( "left_pane_" + name );
	elem.style.display = "block";
	
	// hide all buttons
	elem = document.getElementById( "left_pane_online_button" );
	elem.className = "online";
	elem = document.getElementById( "left_pane_friend_button" );
	if ( elem ) elem.className = "friend";
	elem = document.getElementById( "left_pane_block_button" );
	if ( elem ) elem.className = "block";
	
	elem = document.getElementById( "left_pane_" + name + "_button" );
	elem.className = "selected";
}