function validatePasswordLevel(username,password){
  		var size = password.length;
  		var lv1 = 0;//密码强度太弱禁止提交
  		var lv2 = 1;//密码强度达标,可以提交,但不是很安全,提示用户
  		var lv3 = 2;//密码强度较高
  		
  		if(username!=null&&username.indexOf(password)>-1){
  			return lv1;
  		}
  		
  		var count = 0;
  		for(var i=1;i<size;i++){
  			var def = password.charCodeAt(i)-password.charCodeAt(i-1);
  			if(Math.abs(def)==1){
  				count+=def;
  			}
  		}
  		if(Math.abs(count)>size-2){
  			return lv1;
  		}

  		if(password.match("^[0-9]+$")||password.match("^[a-z]+$")||password.match("^[A-Z]+$")){
  			return lv2;
  		}
  		return lv3;
    }