var imageFiles_9f_1 = new Array();
imageFiles_9f_1['0'] = new Array ('_images/9f_Ultrasonic_Humidification.gif', '_images/9f_Ultrasonic_HumidificationMouseover.gif');

function image_on_9f_1 (position) {
   var doc = eval("document.image9f_1" + position);
   doc.src = imageFiles_9f_1[position][1];
}

function image_off_9f_1 (position) {
   var doc = eval("document.image9f_1" + position);
   doc.src = imageFiles_9f_1[position][0];
}