How to stop highlighting of a div element when double-clicking

The CSS below stops users from being able to select text. Live example: http://jsfiddle.net/hGTwu/20/

/* If you want to implement it in very old browser-versions */
-webkit-user-select: none; /* Chrome/Safari */ 
-moz-user-select: none; /* Firefox */
-ms-user-select: none; /* IE10+ */

/* The rule below is not implemented in browsers yet */
-o-user-select: none;

/* The rule below is implemented in most browsers by now */
user-select: none;

To target IE9 downwards and Opera the HTML attribute unselectable must be used instead:

<div unselectable="on">Test Text</div>

This works for me

html
{
  -webkit-tap-highlight-color:transparent;
}