var MaskUtil = (function(){  
    var $tc,$loading,$loadBefor,$loadAfter;  
    function init(){ 
		$tc = $('.tc');
		$loadBefor = $('.loadBefor');
		$loadAfter = $('.loadAfter');
    }  
    return {  
        mask:function(msg){  
            init();
			$tc.show();
            $loadBefor.show(); 
			$loadAfter.hide();
        }  
        ,unmask:function(){  
            $loadBefor.hide();  
            $loadAfter.show();  
        }
		,success:function(){
			$tc.hide();
            $loadBefor.hide(); 
			$loadAfter.hide();
		}
		,cancel:function(){
			$tc.hide();
            $loadBefor.hide(); 
			$loadAfter.hide();
		}
    }  
}());