In certain situations, you might want to prevent text on the page from being selectable. This is useful when building interfaces that can be dragged or reordered, as you don't want users to select text from the page by accident. Here is a snippet that does this and works in all browsers.

unselectable-text.js

$('p.descr').attr('unselectable','on')
            .css('user-select','none')
            .on('select-start', false);