var imageFiles_f_31 = new Array();
imageFiles_f_31['0'] = new Array ('_images/f_GALLERY.gif', '_images/f_GALLERYMouseover.gif');

function image_on_f_31 (position) {
   var doc = eval("document.imagef_31" + position);
   doc.src = imageFiles_f_31[position][1];
}

function image_off_f_31 (position) {
   var doc = eval("document.imagef_31" + position);
   doc.src = imageFiles_f_31[position][0];
}