var imageFiles_90_21 = new Array();
imageFiles_90_21['0'] = new Array ('_images/90__Food_Give_away.gif', '_images/90__Food_Give_awayMouseover.gif');

function image_on_90_21 (position) {
   var doc = eval("document.image90_21" + position);
   doc.src = imageFiles_90_21[position][1];
}

function image_off_90_21 (position) {
   var doc = eval("document.image90_21" + position);
   doc.src = imageFiles_90_21[position][0];
}