$("#friend div").each(function(i){

    setTimeout("changestatus("+this.id+","+this+")",50);

    setTimeout("downline("+this.id+","+this+")",50);
   
    setTimeout("keyon("+this+")",1000);

 })请教，这段代码有错吗

changestatus("+this.id+","+this+") 参数是字符串？？？？？