Disable Text Selection

Tutorial by Unzo - http://unzo.tumblr.com/

01- Paste the following code before "<style type="text/css">" in your HTML code (ctrl+f to search)

<script src="http://static.tumblr.com/cj8s1v4/h1Pmh5qvj/textselection.js"></script>

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02- Update Preview -> Save. Refresh the page and done!