#2105 fixed ie8下新建帖子时上传附件导致不能发表问题

app/views/attachments/_form.html.erb

@@ -31,13 +31,13 @@
 <span class="add_attachment" style="font-weight:normal;">
     <%#= button_tag "浏览", :type=>"button", :onclick=>"CompatibleSend();" %>
     <!--%= link_to image_tag(),"javascript:void(0)", :onclick => "_file.click()"%-->
-    <%= button_tag "浏览", :type=>"button", :onclick=>"_file.click()",:onmouseover => 'this.focus()' %>
+    <%= button_tag "浏览", :type=>"button", :onclick=>"_file.click()",:onmouseover => 'this.focus()', :style => ie8? ? 'display:none' : '' %>
     <%= file_field_tag 'attachments[dummy][file]',
           :id => '_file',
           :class => 'file_selector',
           :multiple => true,
           :onchange => 'addInputFiles(this);',
-          :style => 'display:none',
+          :style => ie8? ? '' : 'display:none',
           :data => {
             :max_file_size => Setting.attachment_max_size.to_i.kilobytes,
             :max_file_size_message => l(:error_attachment_too_big, :max_size => number_to_human_size(Setting.attachment_max_size.to_i.kilobytes)),