var imageFiles_4y_5 = new Array();
imageFiles_4y_5['0'] = new Array ('_images/4y_Food.gif', '_images/4y_FoodMouseover.gif');

function image_on_4y_5 (position) {
   var doc = eval("document.image4y_5" + position);
   doc.src = imageFiles_4y_5[position][1];
}

function image_off_4y_5 (position) {
   var doc = eval("document.image4y_5" + position);
   doc.src = imageFiles_4y_5[position][0];
}