errorPlacement

Hi guys. I'm trying to make a contact form with the Jquery validation plugin.
I was wondering how can I specify the error message ( for example the name error ) to insert after a label.

I have this code:

$(document).ready(function(){
	
$("#form").validate({
    
 rules: {
    
name: "required",
email: {
      	required: true,
      	email: true 
		},	
		
subject: "required",
message: "required"
},

 
messages: {

name: "write your name!",
email: {
		required: "write your email address!",
      	email: "Invalid email address. Try again!", 
		},
	
subject: "write a subject!",
message: "write your message!",
},


errorPlacement: function(error, element) {
     error.insertAfter("#name_label")
    
}
})
});

Code (markup):

I can make the error's go to the place i want, after the label I name, but I wanted to specify and put the each error in the respective label. Does anyone can tell me how can I do this please?

ahh, and other question. Can i make, after having all fields validated and the mail sent, a image to appear on a div, by changing one image for another?

Thanks