plugin jquery for select html element

seltext.js

(function($){
  $.fn.selText = function() {
		var obj = this[0];
		if ($.browser.msie) {
			var range = obj.offsetParent.createTextRange();
			range.moveToElementText(obj);
			range.select();
		} else if ($.browser.mozilla || $.browser.opera) {
			var selection = obj.ownerDocument.defaultView.getSelection();
			var range = obj.ownerDocument.createRange();
			range.selectNodeContents(obj);
			selection.removeAllRanges();
			selection.addRange(range);
		} else if ($.browser.safari) {
			var selection = obj.ownerDocument.defaultView.getSelection();
			selection.setBaseAndExtent(obj, 0, obj, 1);
		} 
		return this;
	}
}) (jQuery);