Jquery Submit File via dialog

 <a class="replace" params="1">Replace</a>  
 <div id="replace" class="ui-dialog-content ui-widget-content">  
      <form action="/v5/files/doc" enctype="multipart/form-data" class="form-horizontal" role="form" id="FileDocForm" method="post" accept-charset="utf-8">  
           <div class="input file">  
                <label for="FileFile">New File</label><input type="file" name="data[File][file]" id="FileFile">  
           </div>  
      </form>  
 </div>  
 <script type="text/javascript">  
      $(document).ready(function () {  
           var files;  
           $('.replace').click(function(){  
                $('#replace').data('params',$(this).attr('params')).dialog('open');  
           });  
           $('#replace').dialog({       
                modal               : true,  
                autoOpen            : false,  
                autoResize          : true,  
                width               : 'auto',  
                height              : 'auto',  
                buttons             : {  
                     'Submit' : function (){  
                          var data = new FormData($('#replace form')[0]);  
                          $.ajax({  
                               type               : 'POST',  
                               data:data,       
                               processData:false,  
                               contentType: false,   
                               url               :'replaceDoc/'+$('#replace').data('params'),  
                               success           : function(data){  
                                    location.reload();  
                               }  
                          });  
                     },  
                     'Cancel'               : function (){  
                          $(this).dialog('close');  
                     }  
                }  
           });  
      });  
 </script>