var imageFiles_4nn_1 = new Array();
imageFiles_4nn_1['0'] = new Array ('_images/4nn_More_From_Stonybrook.gif', '_images/4nn_More_From_StonybrookMouseover.gif');

function image_on_4nn_1 (position) {
   var doc = eval("document.image4nn_1" + position);
   doc.src = imageFiles_4nn_1[position][1];
}

function image_off_4nn_1 (position) {
   var doc = eval("document.image4nn_1" + position);
   doc.src = imageFiles_4nn_1[position][0];
}