You can download a TGZ HERE
click a thumbnail to enlarge 
1-download-save file-click OK. |
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2- save on desktop. |
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3-extract here. |
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4-open folder XnViewMP. |
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5-open xnview.sh. |
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6-click Run. |
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7-here we are, in Pictures directory - Select "Firefox_wallpaper.png" |
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8-Then double-click on thumbnail. |
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9-Or click fullscreen. |
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