var imageFiles_1o_1 = new Array();
imageFiles_1o_1['0'] = new Array ('_images/1o___.gif', '_images/1o___Mouseover.gif');

function image_on_1o_1 (position) {
   var doc = eval("document.image1o_1" + position);
   doc.src = imageFiles_1o_1[position][1];
}

function image_off_1o_1 (position) {
   var doc = eval("document.image1o_1" + position);
   doc.src = imageFiles_1o_1[position][0];
}