var imageFiles_16_15 = new Array();
imageFiles_16_15['0'] = new Array ('_images/16_Home.gif', '_images/16_HomeMouseover.gif');
imageFiles_16_15['1'] = new Array ('_images/16_Shop_Online.gif', '_images/16_Shop_OnlineMouseover.gif');
imageFiles_16_15['2'] = new Array ('_images/16_Treatments.gif', '_images/16_TreatmentsMouseover.gif');
imageFiles_16_15['3'] = new Array ('_images/16_Vouchers.gif', '_images/16_VouchersMouseover.gif');
imageFiles_16_15['4'] = new Array ('_images/16_Book_an_Appointment.gif', '_images/16_Book_an_AppointmentMouseover.gif');
imageFiles_16_15['5'] = new Array ('_images/16_Contact_Us.gif', '_images/16_Contact_UsMouseover.gif');
imageFiles_16_15['6'] = new Array ('_images/16_Enquiry_Form.gif', '_images/16_Enquiry_FormMouseover.gif');

function image_on_16_15 (position) {
   var doc = eval("document.image16_15" + position);
   doc.src = imageFiles_16_15[position][1];
}

function image_off_16_15 (position) {
   var doc = eval("document.image16_15" + position);
   doc.src = imageFiles_16_15[position][0];
}