var imageFiles_5tbte_21 = new Array();
imageFiles_5tbte_21['0'] = new Array ('_images/5tbte_HOME.gif', '_images/5tbte_HOMEMouseover.gif');
imageFiles_5tbte_21['1'] = new Array ('_images/5tbte_ABOUT_APS.gif', '_images/5tbte_ABOUT_APSMouseover.gif');
imageFiles_5tbte_21['2'] = new Array ('_images/5tbte_APS_ETHICS.gif', '_images/5tbte_APS_ETHICSMouseover.gif');

function image_on_5tbte_21 (position) {
   var doc = eval("document.image5tbte_21" + position);
   doc.src = imageFiles_5tbte_21[position][1];
}

function image_off_5tbte_21 (position) {
   var doc = eval("document.image5tbte_21" + position);
   doc.src = imageFiles_5tbte_21[position][0];
}