Как сделать поиск от 3-х букв на DLE 11.3?

$config['search_length_min'] = 4;

function FastSearch(){$("#story").attr("autocomplete","off");$("#story").blur(function(){$("#searchsuggestions").fadeOut()});$("#story").keyup(function(){var a=$(this).val();0==a.length?$("#searchsuggestions").fadeOut():dle_search_value!=a&&3<a.length&&(clearInterval(dle_search_delay),dle_search_delay=setInterval(function(){dle_do_search(a)},600))})}