var imageFiles_a_25 = new Array();
imageFiles_a_25['0'] = new Array ('_images/a_Gold.gif', '_images/a_GoldMouseover.gif');
imageFiles_a_25['1'] = new Array ('_images/a_Silver.gif', '_images/a_SilverMouseover.gif');
imageFiles_a_25['2'] = new Array ('_images/a_Platinum.gif', '_images/a_PlatinumMouseover.gif');
imageFiles_a_25['3'] = new Array ('_images/a_Palladium.gif', '_images/a_PalladiumMouseover.gif');

function image_on_a_25 (position) {
   var doc = eval("document.imagea_25" + position);
   doc.src = imageFiles_a_25[position][1];
}

function image_off_a_25 (position) {
   var doc = eval("document.imagea_25" + position);
   doc.src = imageFiles_a_25[position][0];
}