var imageFiles_4z_7 = new Array();
imageFiles_4z_7['0'] = new Array ('_images/4z_Supplies.gif', '_images/4z_SuppliesMouseover.gif');

function image_on_4z_7 (position) {
   var doc = eval("document.image4z_7" + position);
   doc.src = imageFiles_4z_7[position][1];
}

function image_off_4z_7 (position) {
   var doc = eval("document.image4z_7" + position);
   doc.src = imageFiles_4z_7[position][0];
}