openproject/app/views/issues/_list.rhtml

<% form_tag({}) do -%>	
<table class="list issues">
    <thead><tr>
        <th><%= link_to image_tag('toggle_check.png'), {}, :onclick => 'toggleIssuesSelection(Element.up(this, "form")); return false;',
                                                           :title => "#{l(:button_check_all)}/#{l(:button_uncheck_all)}" %>
        </th>
		<%= sort_header_tag("#{Issue.table_name}.id", :caption => '#', :default_order => 'desc') %>
        <% query.columns.each do |column| %>
          <%= column_header(column) %>
        <% end %>
	</tr></thead>
	<tbody>
	<% issues.each do |issue| -%>
	<tr id="issue-<%= issue.id %>" class="issue hascontextmenu <%= cycle('odd', 'even') %> <%= "status-#{issue.status.position} priority-#{issue.priority.position}" %>">
	    <td class="checkbox"><%= check_box_tag("ids[]", issue.id, false, :id => nil) %></td>
		<td><%= link_to issue.id, :controller => 'issues', :action => 'show', :id => issue %></td>
        <% query.columns.each do |column| %><%= content_tag 'td', column_content(column, issue), :class => column.name %><% end %>
	</tr>
	<% end -%>
	</tbody>
</table>
<% end -%>