sifr 3 only visible on my computer

I am using sifr3 in my website. I have uploaded the website on a real server and I realized that the sifr3 fonts are only visible when I'm browsing开发者_JAVA技巧 the page from my computer. I have uploaded all the essential files and I don't understand what might be broken. Can you help me please?

This is the link to the test website: http://www.artabout.gr/idiston/

(look at the h1 headings, the menu is using images, not sifr)

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You need to embed the font

http://www.bethinkerconcepts.com/2009/06/embedding-fonts/