var imageFiles_af_19 = new Array();
imageFiles_af_19['0'] = new Array ('_images/af_Reptile.gif', '_images/af_ReptileMouseover.gif');

function image_on_af_19 (position) {
   var doc = eval("document.imageaf_19" + position);
   doc.src = imageFiles_af_19[position][1];
}

function image_off_af_19 (position) {
   var doc = eval("document.imageaf_19" + position);
   doc.src = imageFiles_af_19[position][0];
}