the partial is named new_campaign_partial.rhtml. It has just the html code for creating certain text fiels and calendar
<div id="new_campaign"
<%render :partial =>'new_campaign_partial'%>
</div>
<%= link_to_function "Add a campaign" do |page|
inser_html :bottom, :new_campaign, :partial=>'new_campaign_partial'
end%>