You could try some webkit CSS:
Saw these in Jesse's Glovebox code. I haven't really checked to see
if they work or do what you want though.
*{
/* prevent callout to copy image, etc when tap to hold */
-webkit-touch-callout: none;
/* prevent webkit from resizing text to fit */
-webkit-text-size-adjust: none;
/* make transparent link selection, adjust last value opacity 0 to 1.0
*/
-webkit-tap-highlight-color: rgba(0,0,0,0);
/* prevent copy paste, to allow, change 'none' to 'text' */
-webkit-user-select: none;