var imageFiles_24_1 = new Array();
imageFiles_24_1['0'] = new Array ('_images/24_HOME.gif', '_images/24_HOMEMouseover.gif');
imageFiles_24_1['1'] = new Array ('_images/24_ABOUT_US.gif', '_images/24_ABOUT_USMouseover.gif');

function image_on_24_1 (position) {
   var doc = eval("document.image24_1" + position);
   doc.src = imageFiles_24_1[position][1];
}

function image_off_24_1 (position) {
   var doc = eval("document.image24_1" + position);
   doc.src = imageFiles_24_1[position][0];
}