I got an aspx code that looks like this
<img src="${image_item_path}" />
On Chrome/IE don't have problem, but Firefox render it like this
<img src="%7Bimage_item_path%7D" />
Note: I'm using the jQuery Template engine
Sorry folks, it's a well-known issue with the template engine I'm using. I'm wrapping the img element into a div rather than a script block.
This is the answer I was looking for:
https://github.com/jquery/jquery-tmpl/issues/147
Thank you all