Gist in Tumblr

CSS Code

.gist {
    line-height: 1.3em !important;
    overflow: auto !important;
}

.gist .gist-file {
    border: 0 !important;
}

.gist-data {
    background: #fcfcfc url('http://static.tumblr.com/nzis4lb/vaVlq7fcv/right-bg.gif');
    border: 1px solid #f0f0f0 !important;
    padding: 1em !important;
}

.gist {
    font-size: 11px !important;
    font-family: "Droid Sans Mono", "Lucida Sans Unicode", monospace !important;
    background: transparent !important;
    padding: 0 !important;
}

.gist-meta {
    font-size: 10px !important;
    background: transparent !important;
}

.gist-meta a, .gist-meta a:visited {
    color: #0763ba;
}

.gist-highlight pre {
    font-family: "Droid Sans Mono", "Lucida Sans Unicode", monospace !important;
}

a[href^="https://gist.github.com"] {
    display: none;
}

.gist-meta a[href^="https://gist.github.com"] {
    display: inline;
}

.gist {
    margin: 0 0 -15px 0;
}

Javascript Code

<script type="text/javascript">
    $(function() {
        var gist_injectors = $.map($('a[title="gist"]').get(), (function(p) {
            return function() {
                gist_injectors.shift();
                var gist_id = $(p).attr('href').replace(/.*gist.github.com\//g,'');
                
                document.write = function(gist_style_link) {
                    $('head').append(gist_style_link);
                    document.write = function(gist_html) {
                        $(p).replaceWith(gist_html);
                        if (gist_injectors[0]) 
                            gist_injectors[0]();
                    };
                };
                $(document.body).append('<scr'+'ipt src="http://gist.github.com/'+gist_id+'"></scr'+'ipt>');
            };
            
            $('a[title="gist"]').hide();
        }));

        if (gist_injectors[0]) 
            gist_injectors[0]();
    });
</script>