var imageFiles_1n_1 = new Array();
imageFiles_1n_1['0'] = new Array ('_images/1n__.gif', '_images/1n__Mouseover.gif');

function image_on_1n_1 (position) {
   var doc = eval("document.image1n_1" + position);
   doc.src = imageFiles_1n_1[position][1];
}

function image_off_1n_1 (position) {
   var doc = eval("document.image1n_1" + position);
   doc.src = imageFiles_1n_1[position][0];
}