is this script correct?

I have a piece of coding that I feel it is wrongly codded. It shows everything as "success".

function URLSubmit(url,data,str){	
	$.ajax({
            url: url,
            type: 'POST',
			data: data,
			beforeSend:function(){
					$("#"+str+"_State").html("Please wait...");
				},
			complete:function(){
					$("#"+str+"_State").html("<img src='/images/right.gif'>");
				},
			success:function(msg){
			   if (msg!=""){			
			    $("#"+str+"_State").html("<img src='/images/right.gif'>");
			   }else{
				   alert(msg);
			   }
			  }
		});
	
}

Code (markup):

Those of you who are experts in this kind of coding, could you please tell me if I am wrong or not?

Thanks.

 

Unless your call to url was bad, or didn't work, you'll end up in success.