var imageFiles_bm_58 = new Array();
imageFiles_bm_58['0'] = new Array ('_images/bm_Home.gif', '_images/bm_HomeMouseover.gif');
imageFiles_bm_58['1'] = new Array ('_images/bm_Catalog.gif', '_images/bm_CatalogMouseover.gif');
imageFiles_bm_58['2'] = new Array ('_images/bm_Authors.gif', '_images/bm_AuthorsMouseover.gif');
imageFiles_bm_58['3'] = new Array ('_images/bm_Contact_Us.gif', '_images/bm_Contact_UsMouseover.gif');
imageFiles_bm_58['4'] = new Array ('_images/bm_About_Us.gif', '_images/bm_About_UsMouseover.gif');

function image_on_bm_58 (position) {
   var doc = eval("document.imagebm_58" + position);
   doc.src = imageFiles_bm_58[position][1];
}

function image_off_bm_58 (position) {
   var doc = eval("document.imagebm_58" + position);
   doc.src = imageFiles_bm_58[position][0];
}