<div class="row">
<div class="col-lg-12">
<div class="breadcrumb m-b-sm">
<form action="?search.htm" id="search_form3">
<div class="input-group">
<input type="text" class="form-control" placeholder="关键词" name="keyword" value="">
<span class="input-group-btn"><button class="btn btn-primary" type="submit" id="submit">搜索</button></span>
</div></form>
</div>
</div>
</div>

$(function(){
var jsearch_form3 = $('#search_form3');
jsearch_form3.on('submit', function() {
    var keyword = jsearch_form3.find('input[name="keyword"]').val();
    var url = xn.url('search-'+xn.urlencode(keyword));
    window.location = url;
    return false;
});
});