var imageFiles_vo_77 = new Array();
imageFiles_vo_77['0'] = new Array ('_images/vo_ENGINE_PARTS_by_Brand.gif', '_images/vo_ENGINE_PARTS_by_BrandMouseover.gif');
imageFiles_vo_77['1'] = new Array ('_images/vo_ENGINE_PARTS_by_Category.gif', '_images/vo_ENGINE_PARTS_by_CategoryMouseover.gif');
imageFiles_vo_77['2'] = new Array ('_images/vo_TOOLS___ACCESSORIES.gif', '_images/vo_TOOLS___ACCESSORIESMouseover.gif');
imageFiles_vo_77['3'] = new Array ('_images/vo_ENGINE_SERVICES.gif', '_images/vo_ENGINE_SERVICESMouseover.gif');

function image_on_vo_77 (position) {
   var doc = eval("document.imagevo_77" + position);
   doc.src = imageFiles_vo_77[position][1];
}

function image_off_vo_77 (position) {
   var doc = eval("document.imagevo_77" + position);
   doc.src = imageFiles_vo_77[position][0];
}