var imageFiles_b_1 = new Array();
imageFiles_b_1['0'] = new Array ('_images/b_Home_.gif', '_images/b_Home_Mouseover.gif');
imageFiles_b_1['1'] = new Array ('_images/b_Menu_.gif', '_images/b_Menu_Mouseover.gif');
imageFiles_b_1['2'] = new Array ('_images/b_Articles.gif', '_images/b_ArticlesMouseover.gif');
imageFiles_b_1['3'] = new Array ('_images/b_Map.gif', '_images/b_MapMouseover.gif');
imageFiles_b_1['4'] = new Array ('_images/b_Hot_Links.gif', '_images/b_Hot_LinksMouseover.gif');

function image_on_b_1 (position) {
   var doc = eval("document.imageb_1" + position);
   doc.src = imageFiles_b_1[position][1];
}

function image_off_b_1 (position) {
   var doc = eval("document.imageb_1" + position);
   doc.src = imageFiles_b_1[position][0];
}