var imageFiles_3y_31 = new Array();
imageFiles_3y_31['0'] = new Array ('_images/3y_Manufacturers.gif', '_images/3y_ManufacturersMouseover.gif');

function image_on_3y_31 (position) {
   var doc = eval("document.image3y_31" + position);
   doc.src = imageFiles_3y_31[position][1];
}

function image_off_3y_31 (position) {
   var doc = eval("document.image3y_31" + position);
   doc.src = imageFiles_3y_31[position][0];
}