var imageFiles_bz_5 = new Array();
imageFiles_bz_5['0'] = new Array ('_images/bz_Perth.gif', '_images/bz_PerthMouseover.gif');

function image_on_bz_5 (position) {
   var doc = eval("document.imagebz_5" + position);
   doc.src = imageFiles_bz_5[position][1];
}

function image_off_bz_5 (position) {
   var doc = eval("document.imagebz_5" + position);
   doc.src = imageFiles_bz_5[position][0];
}