I’m writing on iPhone, while away from the desk, but a quick Google turned up this page: disable text selection with jQuery.
Edited in response to the ‘dead link’ comment (from @Herb Caudill). While the original link is, indeed, dead, it appears to be due to a site restructuring (rather than removal) and the new location for the article can be found here: http://chris-barr.com/index.php/entry/disable_text_selection_with_jquery/
And the code provided in that article is reproduced below:
$(function(){
$.extend($.fn.disableTextSelect = function() {
return this.each(function(){
if($.browser.mozilla){//Firefox
$(this).css('MozUserSelect','none');
}else if($.browser.msie){//IE
$(this).bind('selectstart',function(){return false;});
}else{//Opera, etc.
$(this).mousedown(function(){return false;});
}
});
});
$('.noSelect').disableTextSelect();//No text selection on elements with a class of 'noSelect'
});