var imageFiles_77_15 = new Array();
imageFiles_77_15['0'] = new Array ('_images/77_Feedback.gif', '_images/77_FeedbackMouseover.gif');

function image_on_77_15 (position) {
   var doc = eval("document.image77_15" + position);
   doc.src = imageFiles_77_15[position][1];
}

function image_off_77_15 (position) {
   var doc = eval("document.image77_15" + position);
   doc.src = imageFiles_77_15[position][0];
}