一个经典的选项卡代码

特点：渐变背景；代码简单；
效果图：

<style>
body
{
    width: 700px;
    margin: 100px auto 0 auto;
    font-family: Arial, Helvetica;
    font-size: small;
	background: #444;
}

/* ------------------------------------------------- */

#tabs{
  overflow: hidden;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

#tabs li{
  float: left;
  margin: 0 .5em 0 0;
}

#tabs a{
  position: relative;
  background: #ddd;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#ddd));
  background-image: -webkit-linear-gradient(top, #fff, #ddd);
  background-image: -moz-linear-gradient(top, #fff, #ddd);
  background-image: -ms-linear-gradient(top, #fff, #ddd);
  background-image: -o-linear-gradient(top, #fff, #ddd);
  background-image: linear-gradient(to bottom, #fff, #ddd);  
  padding: .7em 3.5em;
  float: left;
  text-decoration: none;
  color: #444;
  text-shadow: 0 1px 0 rgba(255,255,255,.8);
  -webkit-border-radius: 5px 0 0 0;
  -moz-border-radius: 5px 0 0 0;
  border-radius: 5px 0 0 0;
  -moz-box-shadow: 0 2px 2px rgba(0,0,0,.4);
  -webkit-box-shadow: 0 2px 2px rgba(0,0,0,.4);
  box-shadow: 0 2px 2px rgba(0,0,0,.4);
}

#tabs a:hover,
#tabs a:hover::after,
#tabs a:focus,
#tabs a:focus::after{
  background: #fff;
}

#tabs a:focus{
  outline: 0;
}

#tabs a::after{
  content:'';
  position:absolute;
  z-index: 1;
  top: 0;
  right: -.5em;  
  bottom: 0;
  width: 1em;
  background: #ddd;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#ddd));
  background-image: -webkit-linear-gradient(top, #fff, #ddd);
  background-image: -moz-linear-gradient(top, #fff, #ddd);
  background-image: -ms-linear-gradient(top, #fff, #ddd);
  background-image: -o-linear-gradient(top, #fff, #ddd);
  background-image: linear-gradient(to bottom, #fff, #ddd);  
  -moz-box-shadow: 2px 2px 2px rgba(0,0,0,.4);
  -webkit-box-shadow: 2px 2px 2px rgba(0,0,0,.4);
  box-shadow: 2px 2px 2px rgba(0,0,0,.4);
  -webkit-transform: skew(10deg);
  -moz-transform: skew(10deg);
  -ms-transform: skew(10deg);
  -o-transform: skew(10deg);
  transform: skew(10deg);
  -webkit-border-radius: 0 5px 0 0;
  -moz-border-radius: 0 5px 0 0;
  border-radius: 0 5px 0 0;  
}

#tabs #current a{
  background: #fff;
  z-index: 3;
}

#tabs #current a::after{
  background: #fff;
  z-index: 3;
}

/* ------------------------------------------------- */

#content
{
    background: #fff;
    padding: 2em;
	height: 220px;
	position: relative;
	z-index: 2;	
    -moz-border-radius: 0 5px 5px 5px;
    -webkit-border-radius: 0 5px 5px 5px;
    border-radius: 0 5px 5px 5px;
    -moz-box-shadow: 0 -2px 3px -2px rgba(0, 0, 0, .5);
    -webkit-box-shadow: 0 -2px 3px -2px rgba(0, 0, 0, .5);
    box-shadow: 0 -2px 3px -2px rgba(0, 0, 0, .5);
}

#content h2, #content h3, #content p
{
    margin: 0 0 15px 0;
}

/* ------------------------------------------------- */

#about
{
    color: #999;
}

#about a
{
    color: #eee;
}

</style>

<ul id="tabs">
    <li><a href="#" name="tab1">One</a></li>
    <li><a href="#" name="tab2">Two</a></li>
    <li><a href="#" name="tab3">Three</a></li>
    <li><a href="#" name="tab4">Four</a></li>    
</ul>

<div id="content"> 
    <div id="tab1">
		内容一
    </div>
    <div id="tab2">
		内容二
    </div>
    <div id="tab3">
		内容三
    </div>
    <div id="tab4">
		内容四
    </div>
</div>

<script src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<script>
$(document).ready(function() {
    $("#content div").hide(); // Initially hide all content
    $("#tabs li:first").attr("id","current"); // Activate first tab
    $("#content div:first").fadeIn(); // Show first tab content
    
    $('#tabs a').click(function(e) {
        e.preventDefault();
        if ($(this).closest("li").attr("id") == "current"){ //detection for current tab
         return       
        }
        else{             
        $("#content div").hide(); //Hide all content
        $("#tabs li").attr("id",""); //Reset id's
        $(this).parent().attr("id","current"); // Activate this
        $('#' + $(this).attr('name')).fadeIn(); // Show content for current tab
        }
    });
});
</script>