var imageFiles_a4_13 = new Array();
imageFiles_a4_13['0'] = new Array ('_images/a4_HOME.gif', '_images/a4_HOMEMouseover.gif');
imageFiles_a4_13['1'] = new Array ('_images/a4_WHAT_S_NEW.gif', '_images/a4_WHAT_S_NEWMouseover.gif');
imageFiles_a4_13['2'] = new Array ('_images/a4_IN_OUR_STORE.gif', '_images/a4_IN_OUR_STOREMouseover.gif');
imageFiles_a4_13['3'] = new Array ('_images/a4_CONTACT_US.gif', '_images/a4_CONTACT_USMouseover.gif');

function image_on_a4_13 (position) {
   var doc = eval("document.imagea4_13" + position);
   doc.src = imageFiles_a4_13[position][1];
}

function image_off_a4_13 (position) {
   var doc = eval("document.imagea4_13" + position);
   doc.src = imageFiles_a4_13[position][0];
}