var imageFiles_vn_21 = new Array();
imageFiles_vn_21['0'] = new Array ('_images/vn_HOME___.gif', '_images/vn_HOME___Mouseover.gif');
imageFiles_vn_21['1'] = new Array ('_images/vn_SITEMAP___.gif', '_images/vn_SITEMAP___Mouseover.gif');
imageFiles_vn_21['2'] = new Array ('_images/vn_GIFT_CERTIFICATES___.gif', '_images/vn_GIFT_CERTIFICATES___Mouseover.gif');
imageFiles_vn_21['3'] = new Array ('_images/vn_CATALOG_ORDERING__.gif', '_images/vn_CATALOG_ORDERING__Mouseover.gif');

function image_on_vn_21 (position) {
   var doc = eval("document.imagevn_21" + position);
   doc.src = imageFiles_vn_21[position][1];
}

function image_off_vn_21 (position) {
   var doc = eval("document.imagevn_21" + position);
   doc.src = imageFiles_vn_21[position][0];
}