var imageFiles_an_15 = new Array();
imageFiles_an_15['0'] = new Array ('_images/an_Home.gif', '_images/an_HomeMouseover.gif');
imageFiles_an_15['1'] = new Array ('_images/an_Feedback.gif', '_images/an_FeedbackMouseover.gif');
imageFiles_an_15['2'] = new Array ('_images/an_Contact_Us_.gif', '_images/an_Contact_Us_Mouseover.gif');

function image_on_an_15 (position) {
   var doc = eval("document.imagean_15" + position);
   doc.src = imageFiles_an_15[position][1];
}

function image_off_an_15 (position) {
   var doc = eval("document.imagean_15" + position);
   doc.src = imageFiles_an_15[position][0];
}