//已知的2个日期 判断是否有星期几
   function isWeekDay(s1,s2,wk){	
		var obj=true;
        s1 = s1.replace(/-/g, "/");
        s2 = s2.replace(/-/g, "/");
        s1 = new Date(s1);
        s2 = new Date(s2);

        //计算相差天数
        var days= s2.getTime() - s1.getTime();
       var time = parseInt(days/1000/3600/24)+1;
		s1.setDate(s1.getDate()-1);
        for(var i =0 ;i<time ;i++)
        {
		    s1.setDate(s1.getDate()+1);
			//当选择有该日期则返回flase
		    if(s1.getDay()==wk)
		    {
				obj=false;
		    }
			//输出2个日期之间的星期
			//alert(s1.getDay());
        } 
		return obj;
  }
  

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