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');

}

);});