搜索框代码

<div class="search">
    <form action="products.php" method="post">
        <input type="text" value="产品搜索" name="keyword" onclick="javascript:if(this.value=='产品搜索'){this.value='';}" class="text01" />
        <input type="submit" value="" class="anniu" />
    </form>
</div>