Javascript Mouseover in a link_to method

Hi all,
I'm new to all this rails stuff, just a quick and easy one I'm sure.
I'm needing to create a rollover javascript action(a blind_down) and
can do that when a link is clicked, but how do I make it do this when
the link_to is rolled over rather than clicked?

Got this in my menu:
  <span id="menu">
    <%= link_to "HOME", :controller => "store",
                    :action => 'index'%> |
    <%= link_to "SERVICES", :controller => "store",
                       :action => 'services' %> |
    <%= link_to "WORKSHOPS", :controller => "workshop",
                                           :action => 'index'%> |
    <%= link_to "DARKROOM HIRE",:controller => "darkroom",
                                     :action => 'index'%> |
    <%= link_to "GALLERY", :controller => "gallery",
                                :action => 'index' %> |
    <%= link_to "PRINT SALES", :controller => "printsales",
                                            :action => 'index' %> |
    <%= link_to "CONTACT", :controller => "contact",
                                :action => 'index' %><br/>
  </span>
I have a div under it that is style="display:none", but I want it to
display when a link_to from above is rolled over. Just not sure where
to put the code exactly.

Thanks,
Cam

use onmouseover instead of onclick

I'm not using onclick anywhere?

link_to ‘HOME’, { :controller => :store }, :onmouseover => ‘alert(“Mouseover!”)’

Ahh,
Thankyou so much, been trying to work that out for ages.