搜索框的写法

Html写法： <form id="search" class="search" >

<input type="text" id="search_box" class="search_box" value="search MSDN resources..." onfocus="if(this.value=\'search MSDN resources...\')this.value=\'\'" onblur="this.value=\'search MSDN resources...\'"/>

<input type="button" name="search_btn" id="search_btn" class="search_btn" value=""/>

</form>

Jquery写法：//搜索框

$(\'#search_box\').click(function(){$(this).val(\'\')}).focus(function(){$(this).addClass(\'focus\').blur(

function(){

$(this).val(\'search MSDN resources...\').removeClass(\'focus\');

}

);});