Class for disabling and re-enabling text selection across the entire document

textselection.js

var TextSelection;

TextSelection = (function() {

  function TextSelection() {}

  TextSelection.returnFalse = function() {
    return false;
  };

  TextSelection.disable = function() {
    $('body').css({
      "-moz-user-select": "none",
      "-webkit-user-select": "none",
      "-ms-user-select": "none"
    });
    $(document).mousedown(function() {
      return this.returnFalse;
    });
    if ($.browser.msie || $.browser.opera) {
      return $('*').attr("unselectable", "on");
    }
  };

  TextSelection.enable = function() {
    $('body').css({
      "-moz-user-select": "auto",
      "-webkit-user-select": "auto",
      "-ms-user-select": "auto"
    });
    if ($.browser.msie || $.browser.opera) {
      return $('*').attr("unselectable", "off");
    }
  };

  return TextSelection;

})();