如何把如下的代码中的矩形标签形状改成五角星的形状

<!doctype html>

jquery多彩标签云选择效果 ul,li{list-style:none;padding:0px;margin:0px} ul.cloud{zoom:1;overflow:hidden;width:300px} ul.cloud li{-moz-border-radius:6px;-webkit-border-radius:6px;background:#fff;border:solid 1px purple;color:purple;padding:5px;margin-bottom:15px;border-radius:6px;-khtml-border-radius:6px;float:left;margin:0 5px 5px 0;line-height:30px;font-size:14px;cursor:pointer} ul.cloud li:hover,ul.cloud li.Selected{background:purple;color:#fff} ul.cloud li.green{color:green;border-color:green} ul.cloud li.green:hover,ul.cloud li.greenSelected{background:green;color:#fff} ul.cloud li.blue{color:blue;border-color:blue} ul.cloud li.blue:hover,ul.cloud li.blueSelected{background:blue;color:#fff}

标签1
标签2
标签3
标签4
标签5
标签6

<!doctype html>

标签1
标签2
标签3
标签4
标签5
标签6

 <!DOCTYPE html>
<html>
<body>
<style>
#star-five {
   margin: 50px 0;
   position: relative;
   display: block;
   color: red;
   width: 0px;
   height: 0px;
   border-right:  100px solid transparent;
   border-bottom: 70px  solid red;
   border-left:   100px solid transparent;
   -moz-transform:    rotate(35deg);
   -webkit-transform: rotate(35deg);
   -ms-transform:     rotate(35deg);
   -o-transform:      rotate(35deg);
}
#star-five:before {
   border-bottom: 80px solid red;
   border-left: 30px solid transparent;
   border-right: 30px solid transparent;
   position: absolute;
   height: 0;
   width: 0;
   top: -45px;
   left: -65px;
   display: block;
   content: '';
   -webkit-transform: rotate(-35deg);
   -moz-transform:    rotate(-35deg);
   -ms-transform:     rotate(-35deg);
   -o-transform:      rotate(-35deg);

}
#star-five:after {
   position: absolute;
   display: block;
   color: red;
   top: 3px;
   left: -105px;
   width: 0px;
   height: 0px;
   border-right: 100px solid transparent;
   border-bottom: 70px solid red;
   border-left: 100px solid transparent;
   -webkit-transform: rotate(-70deg);
   -moz-transform:    rotate(-70deg);
   -ms-transform:     rotate(-70deg);
   -o-transform:      rotate(-70deg);
   content: '';
}
</style>
<li id='star-five'> </li>
</body>
</html>

你贴的格式乱了，看不清，背景图片加法
 <!DOCTYPE html>
<html>
<body>
<style>
li{
  background:url(http://files.jb51.net/file_images/article/201311/20131107091019.jpg?201310792652) no-repeat ;
  padding-left:25px;
  height:250px;
}
</style>
<li id='star-five'> </li>
</body>
</html>

<!doctype html>
<title>jquery多彩标签云选择效果</title>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.4.1.min.js"></script>
<style>
    ul,li{list-style:none;padding:0px;margin:0px}
    ul.cloud{zoom:1;overflow:hidden;width:300px}
    ul.cloud li{-moz-border-radius:6px;-webkit-border-radius:6px;background:#fff;border:solid 1px  purple;color:purple;padding:5px;margin-bottom:15px;border-radius:6px;-khtml-border-radius:6px;float:left;margin:0 5px 5px 0;line-height:30px;font-size:14px;cursor:pointer}
    ul.cloud li:hover,ul.cloud li.Selected{background:purple;color:#fff}
    ul.cloud li.green{color:green;border-color:green}
    ul.cloud li.green:hover,ul.cloud li.greenSelected{background:green;color:#fff}
    ul.cloud li.blue{color:blue;border-color:blue}
    ul.cloud li.blue:hover,ul.cloud li.blueSelected{background:blue;color:#fff}
</style>
<ul class="cloud" id="ul">
<li>标签1</li>
<li>标签2</li>
<li>标签3</li>
<li>标签4</li>
<li>标签5</li>
<li>标签6</li>
</ul>
<input type="button" value="获取选择标签内容" onclick="getTags()"/>
<script>
    function rnd(min, max) {
        var tmp = min;
        if (max < min) { min = max; max = tmp; }
        return Math.floor(Math.random() * (max - min + 1) + min);
    }
    var arr = ['', 'blue', 'green'];
    $('#ul li')
        .attr('cls', function () { return this.className = arr[rnd(0, arr.length)]; })//随机分配样式
        .click(function () {
            var cls = this.getAttribute('cls'), isSelected = this.className.indexOf('Selected') != -1;
            this.className = isSelected ? cls : cls + ' ' + cls+'Selected';
        });
    function getTags() {
        var tags = $('#ul li[class*="Selected"]').map(function () { return this.innerHTML }).get().join('，');
        alert(tags)
    }
</script>