type image submit tags on IE dropping the params

I have noticed that on IE, the @params[:commit] does not come through on image submit tags, but it does when the image is removed.

this fails:
<%= submit_tag( “Schedule”, {:type => “image”,
:src=>"/images/buttons/schedulecard.gif", :alt=>“Schedule Card”,

but this works:
<%= submit_tag( “Schedule”, {:alt=>“Schedule Card”, :class=>“button”})%>

It seems as though the commit.x
and commit.y will come through, is there a work around to have submit buttons show images here and still have the @params[:commit] come through when posting from IE?

Thanks for the reply, it seems I was suffering this problem: