var imageFiles_z_21 = new Array();
imageFiles_z_21['0'] = new Array ('_images/z_At_Home.gif', '_images/z_At_HomeMouseover.gif');
imageFiles_z_21['1'] = new Array ('_images/z_At_Work.gif', '_images/z_At_WorkMouseover.gif');
imageFiles_z_21['2'] = new Array ('_images/z_At_School.gif', '_images/z_At_SchoolMouseover.gif');
imageFiles_z_21['3'] = new Array ('_images/z_In_Community.gif', '_images/z_In_CommunityMouseover.gif');
imageFiles_z_21['4'] = new Array ('_images/z_At_Play.gif', '_images/z_At_PlayMouseover.gif');

function image_on_z_21 (position) {
   var doc = eval("document.imagez_21" + position);
   doc.src = imageFiles_z_21[position][1];
}

function image_off_z_21 (position) {
   var doc = eval("document.imagez_21" + position);
   doc.src = imageFiles_z_21[position][0];
}