$('#slide_1').cycle({ 
    fx:     'fade', 
	speed:  'fast',
    timeout: 0, 
    next:   '#slide_1_next', 
    prev:   '#slide_1_prev' 
});

$('#slide_2').cycle({ 
    fx:     'fade', 
	speed:  'fast',
    timeout: 0, 
    next:   '#slide_2_next', 
    prev:   '#slide_2_prev' 
});

$('#slide_3').cycle({ 
    fx:     'fade', 
	speed:  'fast',
    timeout: 0, 
    next:   '#slide_3_next', 
    prev:   '#slide_3_prev' 
});