function showHide( menu ) {
	//if ( state == 'block' ) { state = 'none'; } else { state = 'block'; }
	var state;
	if ( document.all ) {
		eval( "state = document.all." + menu + ".style.display" );
		if ( state == 'block' ) { state = 'none'; } else { state = 'block'; }
		eval( "document.all." + menu + ".style.display = state" );
	}
	if ( document.layers ) {
		state = document.layers[menu].display
		if ( state == 'block' ) { state = 'none'; } else { state = 'block'; }
		document.layers[menu].display = state;
	}
	if ( document.getElementById && !document.all ) {
		var e = document.getElementById( menu );
		state = e.style.display;
		if ( state == 'block' ) { state = 'none'; } else { state = 'block'; }
		e.style.display = state;
	}
}