var imageFiles_1y_100 = new Array();
imageFiles_1y_100['0'] = new Array ('_images/1y_Curriculum.gif', '_images/1y_CurriculumMouseover.gif');
imageFiles_1y_100['1'] = new Array ('_images/1y_Staff.gif', '_images/1y_StaffMouseover.gif');

function image_on_1y_100 (position) {
   var doc = eval("document.image1y_100" + position);
   doc.src = imageFiles_1y_100[position][1];
}

function image_off_1y_100 (position) {
   var doc = eval("document.image1y_100" + position);
   doc.src = imageFiles_1y_100[position][0];
}