var imageFiles_bv_4 = new Array();
imageFiles_bv_4['0'] = new Array ('_images/bv_Melbourne.gif', '_images/bv_MelbourneMouseover.gif');

function image_on_bv_4 (position) {
   var doc = eval("document.imagebv_4" + position);
   doc.src = imageFiles_bv_4[position][1];
}

function image_off_bv_4 (position) {
   var doc = eval("document.imagebv_4" + position);
   doc.src = imageFiles_bv_4[position][0];
}