Heath Ledger Being a Cutie

1 - Go to where you customize your tumblr ( tumblr.com/customize ) and click 'Edit HTML'.
2 - Paste the following code anywhere after "<style type="text/css">" but before  "</style>"

        #heathledgerpopup { right:0px; bottom:-1px; position:fixed; z-index:4;}

3 - Then paste this code right after  "<body>"  (before  "</body>")

<div id= "heathledgerpopup"><a href="http://munchmeincookeh.tumblr.com/post/81226814197"><img src= "https://24.media.tumblr.com/2ae2b926095fa58b1d2e477262f10542/tumblr_n399keIW971toz38ro1_r2_250.gif" height="200px"></a></div>

Tip: if the pic is too big or doesn't fit, change the value of 'height' for a smaller one (e.g.: 100px).
If it isn't working try erasing and writting the "}" again. Or just send me a message. Enjoy~