var imageFiles_16o_31 = new Array();
imageFiles_16o_31['0'] = new Array ('_images/16o_.gif', '_images/16o_Mouseover.gif');

function image_on_16o_31 (position) {
   var doc = eval("document.image16o_31" + position);
   doc.src = imageFiles_16o_31[position][1];
}

function image_off_16o_31 (position) {
   var doc = eval("document.image16o_31" + position);
   doc.src = imageFiles_16o_31[position][0];
}