var imageFiles_30n_1 = new Array();
imageFiles_30n_1['0'] = new Array ('_images/30n_Horse_Treats.gif', '_images/30n_Horse_TreatsMouseover.gif');

function image_on_30n_1 (position) {
   var doc = eval("document.image30n_1" + position);
   doc.src = imageFiles_30n_1[position][1];
}

function image_off_30n_1 (position) {
   var doc = eval("document.image30n_1" + position);
   doc.src = imageFiles_30n_1[position][0];
}