attempting to change logo on hover again

shop/templates/layout.html

@@ -30,7 +30,7 @@
 <div id="page-container">
 
     <div class = "header">
-        <img class = "header_img" src = "{{ url_for('static', filename='images/dark_logo.png') }}" alt="logo image"/>
+        <img class = "header_img" onmouseover="{{ url_for('static', filename='images/dark_logo_orange.png') }'" onmouseout="{{ url_for('static', filename='images/dark_logo.png') }}" src = "{{ url_for('static', filename='images/dark_logo.png') }}" alt="logo image"/>
     </div>
 
     <ul class = "navbar">