var imageFiles_15_1 = new Array();
imageFiles_15_1['0'] = new Array ('_images/15_Puppy_Eats.gif', '_images/15_Puppy_EatsMouseover.gif');

function image_on_15_1 (position) {
   var doc = eval("document.image15_1" + position);
   doc.src = imageFiles_15_1[position][1];
}

function image_off_15_1 (position) {
   var doc = eval("document.image15_1" + position);
   doc.src = imageFiles_15_1[position][0];
}