var imageFiles_yul1_21 = new Array();
imageFiles_yul1_21['0'] = new Array ('_images/yul1_Home.gif', '_images/yul1_HomeMouseover.gif');
imageFiles_yul1_21['1'] = new Array ('_images/yul1_Calendar.gif', '_images/yul1_CalendarMouseover.gif');
imageFiles_yul1_21['2'] = new Array ('_images/yul1_Newsletter.gif', '_images/yul1_NewsletterMouseover.gif');
imageFiles_yul1_21['3'] = new Array ('_images/yul1_Programs.gif', '_images/yul1_ProgramsMouseover.gif');
imageFiles_yul1_21['4'] = new Array ('_images/yul1_Features.gif', '_images/yul1_FeaturesMouseover.gif');
imageFiles_yul1_21['5'] = new Array ('_images/yul1_Staff.gif', '_images/yul1_StaffMouseover.gif');
imageFiles_yul1_21['6'] = new Array ('_images/yul1_Contact_Us.gif', '_images/yul1_Contact_UsMouseover.gif');
imageFiles_yul1_21['7'] = new Array ('_images/yul1_Registration.gif', '_images/yul1_RegistrationMouseover.gif');
imageFiles_yul1_21['8'] = new Array ('_images/yul1_Links.gif', '_images/yul1_LinksMouseover.gif');

function image_on_yul1_21 (position) {
   var doc = eval("document.imageyul1_21" + position);
   doc.src = imageFiles_yul1_21[position][1];
}

function image_off_yul1_21 (position) {
   var doc = eval("document.imageyul1_21" + position);
   doc.src = imageFiles_yul1_21[position][0];
}