var imageFiles_21_28 = new Array();
imageFiles_21_28['0'] = new Array ('_images/21_Home.gif', '_images/21_HomeMouseover.gif');
imageFiles_21_28['1'] = new Array ('_images/21_Our_Agency.gif', '_images/21_Our_AgencyMouseover.gif');
imageFiles_21_28['2'] = new Array ('_images/21_Products.gif', '_images/21_ProductsMouseover.gif');
imageFiles_21_28['3'] = new Array ('_images/21_Companies.gif', '_images/21_CompaniesMouseover.gif');
imageFiles_21_28['4'] = new Array ('_images/21_Contact_Us.gif', '_images/21_Contact_UsMouseover.gif');

function image_on_21_28 (position) {
   var doc = eval("document.image21_28" + position);
   doc.src = imageFiles_21_28[position][1];
}

function image_off_21_28 (position) {
   var doc = eval("document.image21_28" + position);
   doc.src = imageFiles_21_28[position][0];
}