html - Code being removed in browser after file uploaded -

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i'm trying add facebook button, have follwed steps fb developers site, placed needed be, tried various other solutions button not showing up. can 1 please explain why after upload file server, @ source code in browser code facebook button no longer there? entire div tag surrounding code missing. when @ file on server contains code button browser doesn't seem recognize it.

i have read having create api key(app id), have heard it's not necessary. also, if facebook account has settings country restrictions, mess whether button shows page i'm trying set facebook page on site. missing?

please help!

here's have in code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://ogp.me/ns/fb#">

some more stuff in body...

<div class="sidefigures">     <div class="like">       <iframe src="//www.facebook.com/plugins/like.php?href=https%3a%2f%2fwww.facebook.com%2fentertainmentindustryintroductionconvention&amp;send=false&amp;layout=button_count&amp;width=150&amp;show_faces=false&amp;font=verdana&amp;colorscheme=light&amp;action=like&amp;height=21" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:150px; height:21px;" allowtransparency="true"></iframe>     </div>     <img src="images/eiic figures.png" width="252" height="497" /> </div>

but when @ source code browser (in example ie), see:

<html xmlns="http://www.w3.org/1999/xhtml">

and div containing button...

<div class="sidefigures"><img src="images/eiic figures.png" width="252" height="497" /></div>


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