Ruby on Rails

I have a form helper that looks like this:

#_alert.html.haml
= add_field_link "Add Email", f, :notification_emails

#application_helper.rb
def add_field_link(name, f, association)
new_object =
f.object.class.reflect_on_association(association).klass.new
fields = f.fields_for(association, new_object, :child_index =>
"new_#{association}") do |builder|
render("home/" + association.to_s.singularize + "_fields", :f =>
builder)
end
link_to_function(name,
h("add_fields(this,'#{association}','#{escape_javascript(fields)}')"))
end

:javascript
function add_fields(link, association, content) {
var new_id = new Date().getTime();
var regexp = new RegExp('new_' + association, 'g');
$(link).prev('ul').append('<li>' + content.replace(regexp, new_id)
+ '</li>');
}

This line here I had to use ' rather than "/ because otherwise
firebug will raise error "unexpected token &":

link_to_function(name,
h("add_fields(this,'#{association}','#{escape_javascript(fields)}')"))

but when I click on link its supposed to add a new field with model
attributes but doesnt. I look in firebug console and see this:

<a href="#" onclick="add_fields(this,'notification_emails','&amp;lt;li
class=\'fields\' style=\'list-style-type: none;\'&amp;gt;\n
&amp;lt;input id=
\&amp;quot;alert_rule_notification_emails_attributes_new_notification_emails_email
\&amp;quot; name=\&amp;quot;alert_rule[notification_emails_attributes]
[new_notification_emails][email]\&amp;quot; size=\&amp;quot;
30\&amp;quot; type=\&amp;quot;text\&amp;quot; /&amp;gt;\n
&amp;lt;input id=
\&amp;quot;alert_rule_notification_emails_attributes_new_notification_emails__destroy
\&amp;quot; name=\&amp;quot;alert_rule[notification_emails_attributes]
[new_notification_emails][_destroy]\&amp;quot; type=\&amp;quot;hidden
\&amp;quot; value=\&amp;quot;false\&amp;quot; /&amp;gt;\n
&amp;lt;input id=
\&amp;quot;alert_rule_notification_emails_attributes_new_notification_emails__destroy
\&amp;quot; name=\&amp;quot;alert_rule[notification_emails_attributes]
[new_notification_emails][_destroy]\&amp;quot; type=\&amp;quot;hidden
\&amp;quot; value=\&amp;quot;false\&amp;quot; /&amp;gt;&amp;lt;a href=
\&amp;quot;#\&amp;quot; onclick=\&amp;quot;remove_fields(this); return
false;\&amp;quot;&amp;gt;remove&amp;lt;\/a&amp;gt;\n&amp;lt;\/
li&amp;gt;\n'); return false;">Add Email</a>

Any idea why it looks like this and why the expected behavior doesnt
occur?

thanks for response

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