$(function(){
$("input.auto").autocomplete('autocomplete.php',{delay : '10', cacheLength: '10',selectOnly: "true",extraParams: {type:"fio"}});
$("#add").click(function(){
$(this).before($("#search").clone().attr("value",""));
});
});
...
<input type='text' id='search' class='ac_input auto' /><img src='add.png' id='add' />