function tambah_data(){
            var  html ='<div id="file_div_'+Ids+'" >';
                     html+='<div class="row"><div class="col-md-2">';
                     html+='   <input type="text" placeholder="Nama File" class="form-control" name="nama_file[]">';
                     html+='</div>';
                     html+='<div class="col-md-2">';
                     html+='    <input type="file" name="file[]" onChange="readImage(this,'+Ids+')">';
                     html+='</div>';
                     html+='<div class="col-md-2">';
                     html+='  <button  onClick="removeFile(\''+Ids+'\');" type="button" class="btn btn-danger">X</button>';
                     html+='</div></div>';
                     html+='<div class="row">';
                     html+='<div class="col-md-5">';
                        html+='<br/><img style="width:150px;height:150px" id="img_'+Ids+'">';
                     html+='</div>';
                     html+='</div>';
                 html+='<br/></div>';
                $("#gen_data").append(html);
                Ids++;
        }