var imageFiles_bu_17 = new Array();
imageFiles_bu_17['0'] = new Array ('_images/bu_Brisbane.gif', '_images/bu_BrisbaneMouseover.gif');

function image_on_bu_17 (position) {
   var doc = eval("document.imagebu_17" + position);
   doc.src = imageFiles_bu_17[position][1];
}

function image_off_bu_17 (position) {
   var doc = eval("document.imagebu_17" + position);
   doc.src = imageFiles_bu_17[position][0];
}