var imageFiles_a3_21 = new Array();
imageFiles_a3_21['0'] = new Array ('_images/a3_Upcoming_Events.gif', '_images/a3_Upcoming_EventsMouseover.gif');

function image_on_a3_21 (position) {
   var doc = eval("document.imagea3_21" + position);
   doc.src = imageFiles_a3_21[position][1];
}

function image_off_a3_21 (position) {
   var doc = eval("document.imagea3_21" + position);
   doc.src = imageFiles_a3_21[position][0];
}