$("#polls_head_show").html("<%= escape_javascript(render :partial => 'show_head', :locals => {:exercise => @exercise}) %>");
$("#polls_head_edit").html("<%= escape_javascript(render :partial => 'edit_head', :locals => {:exercise => @exercise}) %>");
$("#polls_head_edit").hide();
$("#polls_head_show").show();
$("#exercise_submit").html("<%= escape_javascript(render :partial => 'exercise_submit', :locals => {:exercise => @exercise}) %>");