Redmine/app/views/projects/calendar.rhtml

<h2><%= l(:label_calendar) %></h2>

<table width="100%">
<tr>
<td align="left">
<%= start_form_tag :action => 'calendar', :id => @project %>
<%= select_month(@month, :prefix => "month", :discard_type => true) %>
<%= select_year(@year, :prefix => "year", :discard_type => true) %>
<%= submit_tag l(:button_submit), :class => "button-small" %>
<%= end_form_tag %>
</td>
<td align="right">
<%= image_tag 'gantt' %>
<%= link_to l(:label_gantt_chart), :action => 'gantt', :id => @project %>&nbsp;
</td>
</tr>
</table>
<br />

<table class="calenderTable">
<tr class="ListHead">
<td></td>
<% 1.upto(7) do |d| %>
    <td align="center" width="14%"><%= day_name(d) %></td>
<% end %>
</tr>
<tr height="100">
<% day = @date_from
while day <= @date_to
	if day.cwday == 1 %>
	<td valign="middle"><%= day.cweek %></td>
	<% end %>	
	<td valign="top" width="14%" class="<%= day.month==@month ? "even" : "odd" %>">
	<p align="right"><%= day==Date.today ? "<b>#{day.day}</b>" : day.day %></p>	
	<% day_issues = []
	@issues.each { |i| day_issues << i if i.start_date == day or i.due_date == day } 
	day_issues.each do |i| %>	
		<%= if day == i.start_date and day == i.due_date
		    image_tag('arrow_bw')
		elsif day == i.start_date
		    image_tag('arrow_from') 
		elsif day == i.due_date
		    image_tag('arrow_to') 
		end %>
		<small><%= link_to "#{i.tracker.name} ##{i.id}", :controller => 'issues', :action => 'show', :id => i %>: <%= i.subject.sub(/^(.{30}[^\s]*\s).*$/, '\1 (...)') %></small><br />
	<% end %>
    </td>
	<%= '</tr><tr height="100">' if day.cwday >= 7 and day!=@date_to %>
	<%
	day = day + 1
end %>
</tr>
</table>

<table width="100%">
<tr>
<td align="left">
<%= link_to_remote ('&#171; ' + l(:label_previous)), 
                    {:update => "content", :url => { :year => (@month==1 ? @year-1 : @year), :month =>(@month==1 ? 12 : @month-1) }},
                    {:href => url_for(:action => 'calendar', :year => (@month==1 ? @year-1 : @year), :month =>(@month==1 ? 12 : @month-1))}
                    %>
</td>
<td align="right">
<%= link_to_remote (l(:label_next) + ' &#187;'), 
                    {:update => "content", :url => { :year => (@month==12 ? @year+1 : @year), :month =>(@month==12 ? 1 : @month+1) }},
                    {:href => url_for(:action => 'calendar', :year => (@month==12 ? @year+1 : @year), :month =>(@month==12 ? 1 : @month+1))}
                    %>
&nbsp;
</td>
</tr>
</table>
<br />
<%= image_tag 'arrow_from' %>&nbsp;&nbsp;<%= l(:text_tip_task_begin_day) %><br />
<%= image_tag 'arrow_to' %>&nbsp;&nbsp;<%= l(:text_tip_task_end_day) %><br />
<%= image_tag 'arrow_bw' %>&nbsp;&nbsp;<%= l(:text_tip_task_begin_end_day) %><br />