post_data = {'first_name'    : $('input[name=ifirstname]').val(),
             'last_name'     : $('input[name=ilastname]').val(),
             'user_email'    : $('input[name=iemail]').val(),
             'phone_number'  : $('input[name=iphone]').val(),
             'subject'       : $("#srequest :selected").text(),
             'msg'           : $('[name=tmessage]').val()
             };
         $.post('contact_me.php', post_data, function(response){
             if(response.type == 'error'){
                 output = response.text;
                 alert(output);
             }else{
                 output = response.text;
                 alert(output);
                 setDefaultVals();
             }
         }, 'json');