var imageFiles_bt_31 = new Array();
imageFiles_bt_31['0'] = new Array ('_images/bt_Bathbars.gif', '_images/bt_BathbarsMouseover.gif');

function image_on_bt_31 (position) {
   var doc = eval("document.imagebt_31" + position);
   doc.src = imageFiles_bt_31[position][1];
}

function image_off_bt_31 (position) {
   var doc = eval("document.imagebt_31" + position);
   doc.src = imageFiles_bt_31[position][0];
}