It is the host site that the poster has used to store his pictures for uploading.
All you have to do is "right click with your mouse on the red X" then click on the "properties" line and then look for the URL ADDRESS and back drag to "highlight the whole address" and then click on the COPY.
Then go to the address bar at top of this screen and place your mouse cursur in the address bar and then right click here and then click on the "paste" and hit enter, Presto the picture appears. Then just hit your backspace tab up at the top left to go back to original thread and it will show the picture.
Brian