var imageFiles_pb_13 = new Array();
imageFiles_pb_13['0'] = new Array ('_images/pb_PICTURES.gif', '_images/pb_PICTURESMouseover.gif');

function image_on_pb_13 (position) {
   var doc = eval("document.imagepb_13" + position);
   doc.src = imageFiles_pb_13[position][1];
}

function image_off_pb_13 (position) {
   var doc = eval("document.imagepb_13" + position);
   doc.src = imageFiles_pb_13[position][0];
}