<script type="text/javascript" src="js/lottery.js"></script>

 function start_lottery(){

     if(flag){

         //alert('正在抽奖，请等待抽奖结果！');

         //return false;

         return void(0);

     }

     flag=true;

     index = 1;              //当前选中对象的位置

     fast  = rand(3,6);      //在哪个位置开始加速

     cycle = rand(3,5);      //转动多少圈

     speed = 300;            //开始时速度 

     $.ajax({

         url: 'lottery.php',

         type: "post",

         data:null,

         dataType: "json",

         timeout: 20000,

         cache: false,

         beforeSend: function(){// 提交之前

         },

         error: function(){//出错

             flag=false;

         },

         success: function(res){//成功

             if(typeof(res.award_id)!='undefined'){

                 lucky = res.award_id;    //中奖号码

                 award = res.award_name;  //奖品名称

                 show_lottery();

             }else{

                 flag=false;

                 alert(res.err);

             }

         }

     });

 }

 //奖品配置

 $award = array(

     // 奖品ID => array('奖品名称',概率)

     1 => array('悟空公仔',0.1),

     2 => array('小乖虎公仔',0.1),

     3 => array('神秘大礼包',0.1),

     4 => array('智能游戏手柄',0.1),

     5 => array('小角鹿公仔',0.1),

     6 => array('豆蛙抱枕',0.1),

     7 => array('游戏耳机',0.2),

     8 => array('雷蛇键盘',0.2),

 ); 

 $r =rand(1,100);