一段代码，找不到错误原因，求帮忙

var timeCirculate;
var strCirculateMSG = "";
var blnCirculate = false;

function Fun(array,fun1,fun2){

    var i=0,len = array.length; //这里要注意在执行过程中数组最好是不变的
   
    var arr;// 用于判断是否中断递归操作

    timeCirculate = setTimeout(function(){


        arr = fun1( array[i] , i++ ); //循环体要做的操作
        blnCirculate = arr[0];
        strCirculateMSG = arr[1];

        //alert(blnCirculate);
        //alert(strCirculateMSG);


        // 正常 循环体内
        if(blnCirculate){
            if( i < len ){
               
                timeCirculate = setTimeout(arguments.callee(array,fun1,fun2),0);

            }else{
               
                fun2(); //循环结束之后要做的操作
            }
        
        // 异常，退出循环
        }else{

            fun2(); //循环结束之后要做的操作
        }
    },0);
}

function a(value,i){

    if(value == 3){
        return [false,"错啦"];
    }
    return [true,""];
}
function b(){
   
    clearTimeout(timeCirculate); // 清除 setTimeout
}

var arr=new Array(1,2,3);
Fun(arr,a,b);

alert(blnCirculate);
alert(strCirculateMSG);