function saveBuildResult(gid, exid, inid){

    var objForm = $('buildForm');
    objForm['build[grade_id]'].value = gid;
    objForm['build[exterior_color_id]'].value = exid;
    objForm['build[interior_color_id]'].value = inid;

    new Ajax.Request(objForm.action,
                    {asynchronous:true, 
                     method:'post',
                     evalScripts:true, 
                     parameters:objForm.serialize()}
    );

}