var imageFiles_1a_28 = new Array();
imageFiles_1a_28['0'] = new Array ('_images/1a_Home.gif', '_images/1a_HomeMouseover.gif');
imageFiles_1a_28['1'] = new Array ('_images/1a_About_Us.gif', '_images/1a_About_UsMouseover.gif');
imageFiles_1a_28['2'] = new Array ('_images/1a_Contact_Us.gif', '_images/1a_Contact_UsMouseover.gif');
imageFiles_1a_28['3'] = new Array ('_images/1a_Feedback.gif', '_images/1a_FeedbackMouseover.gif');
imageFiles_1a_28['4'] = new Array ('_images/1a_Courses.gif', '_images/1a_CoursesMouseover.gif');
imageFiles_1a_28['5'] = new Array ('_images/1a_Online_Store.gif', '_images/1a_Online_StoreMouseover.gif');

function image_on_1a_28 (position) {
   var doc = eval("document.image1a_28" + position);
   doc.src = imageFiles_1a_28[position][1];
}

function image_off_1a_28 (position) {
   var doc = eval("document.image1a_28" + position);
   doc.src = imageFiles_1a_28[position][0];
}