(function($) {



	$.isDefinedGlobal = function(varname) {

		return eval('typeof(' + varname + ') != "undefined"');

	};



	$.isDefinedLocal = function(variable) {

		return typeof(variable) != "undefined";

	};



	$.serialize = function(object) {

		var query = '';

		$.each(object, function(key, value) {

			query = query + (query ? '&' : '') + key + '=' + value;

		});

		return query;

	};



	$.fn.tag = function() {

		return this[0].tagName.toLowerCase();

	};



	$.fn.name = function() {

		return $(this).attr('name').replace(/\[]/, '');

	};



})(jQuery);