var imageFiles_bw_16 = new Array();
imageFiles_bw_16['0'] = new Array ('_images/bw_Dog.gif', '_images/bw_DogMouseover.gif');

function image_on_bw_16 (position) {
   var doc = eval("document.imagebw_16" + position);
   doc.src = imageFiles_bw_16[position][1];
}

function image_off_bw_16 (position) {
   var doc = eval("document.imagebw_16" + position);
   doc.src = imageFiles_bw_16[position][0];
}