Getting value of form using Ajax (and problems with Safari)

[stamppot]

I have got two forms, the first is a textarea plus a link that activates some javascript to change the form, the second activates some javascript on the onchange event which changes it into a textarea form.
This works in Firefox, but not in Safari.

Also, I need the value which is selected. I've found an example that gives the parameter to the javascript, like this:
<input type="checkbox" name="name"
onclick="new Ajax.Request('<%= url_foraction => 'update_attribute', :id => obj) %>', {parameters:'name='+this.name+'&value='+this.checked})"/>

How do I get the value which is selected when the onchange event occurs using RJS?


View:

<%= javascript_include_tag :defaults %>

<h1>Test for Safari</h1>

%= form_tag :action => 'do_something', :id => @survey %>

<div id="form1_1">
<%= q_item(1, 1)%>
</div>

<div id="form1_2">
	<%= text_area("row1", "col2", { :cols => "20", :rows => "3" }) %>
  <div class="change">
		<%= link_to_remote("change",
        :url => { :action => :change_back_div,
									:id => "form1_2" },
				:id => "change") %> 
	</div>
</div>

  <%= submit_tag 'Send' %>
<%= end_form_tag %>

helper:

module AdminHelper

  def q_item(row, col)
	  return select("row"+row.to_s, "col"+col.to_s, %w{ Text Rating3 Rating4 ListItem GrantAccess},
	        {:include_blank => true}, 
			    { :onchange => remote_function(
							:url => { :action => :change_div,
												:id => "form"+row.to_s + "_" + col.to_s } ) } )
	end   

  def to_question_item_form
    id = params[:id]
    remote_function( :url => { :action => :change_div,
                               :id => id } )
  end

admin_controller:

  def change_div
    pos = args_id(params[:id])
    html_options = { :class => "change" }
    render :update do |page|
      page[pos[:form]].replace( tag("div", "id" => pos[:form]) <<
        text_area(pos[:row], pos[:col], {:cols => 20, :rows => 3}) <<
        tag("div", "class" => "change") <<
        link_to_function("change",
          remote_function( :url => { :action => :change_back_div,
                                     :id => pos[:form] }),
          html_options))
      page.visual_effect :highlight, pos[:form], :duration => 2
    end
  end
  
  def change_back_div
    pos = args_id(params[:id])
    render :update do |page|
            page[pos[:form]].replace( tag("div", "id" => pos[:form]) <<
            select(pos[:row], pos[:col], %w{ Text Rating3 Rating4 ListItem GrantAccess}, 
  			    { :include_blank => true }, 
  			    { :onchange => to_question_item_form } ))
      page.visual_effect :highlight , pos[:form], :duration => 2
    end
  end