var cf01 = new Crossfader( new Array('cf01_01','cf01_02','cf01_03'), 2000, 5000 );
var cf02 = new Crossfader( new Array('cf02_01','cf02_02','cf02_03'), 2000, 5000 );
var cf03 = new Crossfader( new Array('cf03_01','cf03_02'), 2000, 5000 );
var cf04 = new Crossfader( new Array('cf04_01','cf04_02'), 2000, 5000 );