var imageFiles_21_17 = new Array();
imageFiles_21_17['0'] = new Array ('_images/21_Home.gif', '_images/21_HomeMouseover.gif');
imageFiles_21_17['1'] = new Array ('_images/21_Our_Agency.gif', '_images/21_Our_AgencyMouseover.gif');
imageFiles_21_17['2'] = new Array ('_images/21_Products.gif', '_images/21_ProductsMouseover.gif');
imageFiles_21_17['3'] = new Array ('_images/21_Companies.gif', '_images/21_CompaniesMouseover.gif');
imageFiles_21_17['4'] = new Array ('_images/21_Contact_Us.gif', '_images/21_Contact_UsMouseover.gif');

function image_on_21_17 (position) {
   var doc = eval("document.image21_17" + position);
   doc.src = imageFiles_21_17[position][1];
}

function image_off_21_17 (position) {
   var doc = eval("document.image21_17" + position);
   doc.src = imageFiles_21_17[position][0];
}