I've got a form that I clear on focus. I've selected the whole form and it works great except that the submit button goes blank when I click it.

how can I exclude my input of input#submit from the following code?

    $(".wpcf7-form input, .wpcf7-form textarea").focus(function() {
 if( this.value == this.defaultValue ) {
  this.value = "";
  $(this).addClass('filled');
 }
}).blur(function() {
 if( !this.value.length ) {
  this.value = this.defaultValue;
  $(this).removeClass('filled');
 }
});