Click image and Open up URL in new browser

Hi,
 
I have wrapped an <a><a/> around an image to it will be possible to click this image and go to www.yahoo.com
In this case, it redirects to www.yahoo.com.
 
What I wonder is how it could be possible to open up a new browserwindow with www.yahoo.com like this ?
 
Thanks 
<a href="http://www.yahoo.com"><asp:Image ID="Image13" runat="server" Height="100px" Width="300px" /></a>
 
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