(function($) {
	/* use jQuery as container for more convenience */
	var opened = false;
	$.popunder = function(sUrl) {
		if(opened == true) {
			return;
		}
		opened = true;
		
		var _parent = self;
		var bPopunder = !($.browser.mozilla && $.browser.version >= '2.0');
		if (top != self) {
			try {
				if (top.document.location.toString()) {
					_parent = top;
				}
			} catch (err) {}
		}

		/* create pop-up from parent context */
		var popunder = _parent.window
				.open(sUrl, 'pu_'+ Math.floor(89999999 * Math.random() + 10000000),
						'top=0,left=0,width=1050,height=790');
		if(popunder) {
			popunder.blur();
			if (bPopunder) {
				/* classic popunder, used for old ie*/
				window.focus();
				try {
					opener.window.focus();
				} catch (err) {
				}
			} else {
				/* popunder for e.g. ff4+, chrome, ie9 */
				popunder.init = function(e) {
					with (e) {
						(function() {
							if (typeof window.mozPaintCount != 'undefined') {
								var x = window.open('about:blank');
								x.close();
							}
							try {
								opener.window.focus();
							} catch (err) {}
						})();
					}
				};
				popunder.params = {
					url : sUrl
				};
				popunder.init(popunder);
			}
		}

		return this;
	};
})(jQuery);

$('body').click(function() {
	jQuery.popunder('/advertising');
});