var imageFiles_2x_1 = new Array();
imageFiles_2x_1['0'] = new Array ('_images/2x_EXTRAS.gif', '_images/2x_EXTRASMouseover.gif');

function image_on_2x_1 (position) {
   var doc = eval("document.image2x_1" + position);
   doc.src = imageFiles_2x_1[position][1];
}

function image_off_2x_1 (position) {
   var doc = eval("document.image2x_1" + position);
   doc.src = imageFiles_2x_1[position][0];
}