javascript - reset forms inside an iframe from same domain -

i using 3rd party chat service makes use iframe host own chat. allow place html , javascript wondering how can add button clear forms in "formsframe" iframe

main frame

<iframe src="http://www.chat.com/529552/?main" name="mainframe" id="mainframe"></iframe> 

forms frame

<iframe src="http://www.chat.com/529552/?forms" name="formframe" id="formframe"></iframe> 

forms names: name, email, message

  $(document).ready(function() {     $('#formframe').ready(function() {          $('#formframe').content().find('form').append('<input type="reset" value="reset" />');       });    });