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Rails Image Tag Rollover Helper

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<%= image_tag "/images/btn-off.jpg", :mouseover => "/images/btn-on.jpg" %>

which translates into...

btn-off

now with a link wrapped around the image tag

<%= link_to image_tag("/images/btn-off.jpg", :mouseover => "/images/btn-on.jpg"), :action => "perform" %>

and also as an image submit button for a form

<%= image_submit_tag "/images/btn-off.jpg", :mouseover => "/images/btn-on.jpg"%>
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