var imageFiles_bt_4 = new Array();
imageFiles_bt_4['0'] = new Array ('_images/bt_Bathbars.gif', '_images/bt_BathbarsMouseover.gif');

function image_on_bt_4 (position) {
   var doc = eval("document.imagebt_4" + position);
   doc.src = imageFiles_bt_4[position][1];
}

function image_off_bt_4 (position) {
   var doc = eval("document.imagebt_4" + position);
   doc.src = imageFiles_bt_4[position][0];
}