var imageFiles_12_28 = new Array();
imageFiles_12_28['0'] = new Array ('_images/12_Instructors_.gif', '_images/12_Instructors_Mouseover.gif');
imageFiles_12_28['1'] = new Array ('_images/12_Course_Catalog.gif', '_images/12_Course_CatalogMouseover.gif');
imageFiles_12_28['2'] = new Array ('_images/12_Enroll___Register.gif', '_images/12_Enroll___RegisterMouseover.gif');
imageFiles_12_28['3'] = new Array ('_images/12_Testimonials.gif', '_images/12_TestimonialsMouseover.gif');
imageFiles_12_28['4'] = new Array ('_images/12_Host_A_Work_Shop.gif', '_images/12_Host_A_Work_ShopMouseover.gif');
imageFiles_12_28['5'] = new Array ('_images/12_For_The_Professional.gif', '_images/12_For_The_ProfessionalMouseover.gif');
imageFiles_12_28['6'] = new Array ('_images/12_Contact_Us.gif', '_images/12_Contact_UsMouseover.gif');
imageFiles_12_28['7'] = new Array ('_images/12_Guest_Book.gif', '_images/12_Guest_BookMouseover.gif');
imageFiles_12_28['8'] = new Array ('_images/12_Home.gif', '_images/12_HomeMouseover.gif');

function image_on_12_28 (position) {
   var doc = eval("document.image12_28" + position);
   doc.src = imageFiles_12_28[position][1];
}

function image_off_12_28 (position) {
   var doc = eval("document.image12_28" + position);
   doc.src = imageFiles_12_28[position][0];
}