var imageFiles_bm_23 = new Array();
imageFiles_bm_23['0'] = new Array ('_images/bm_Home.gif', '_images/bm_HomeMouseover.gif');
imageFiles_bm_23['1'] = new Array ('_images/bm_Catalog.gif', '_images/bm_CatalogMouseover.gif');
imageFiles_bm_23['2'] = new Array ('_images/bm_Authors.gif', '_images/bm_AuthorsMouseover.gif');
imageFiles_bm_23['3'] = new Array ('_images/bm_Contact_Us.gif', '_images/bm_Contact_UsMouseover.gif');
imageFiles_bm_23['4'] = new Array ('_images/bm_About_Us.gif', '_images/bm_About_UsMouseover.gif');

function image_on_bm_23 (position) {
   var doc = eval("document.imagebm_23" + position);
   doc.src = imageFiles_bm_23[position][1];
}

function image_off_bm_23 (position) {
   var doc = eval("document.imagebm_23" + position);
   doc.src = imageFiles_bm_23[position][0];
}