function change(x) {
	$("midsizeimage").setProperty('src',x);
}

function showpopup() {
	if($('popup_closeButton') == null) {
		$('popup').addClass('mocha');
		new MochaUI.NewWindowsFromHTML();
		$('popup_closeButton').removeEvents('click');
		$('popup_closeButton').addEvent('click', function() { $('popup').setStyle('display', 'none'); });
	}
	else
		$('popup').setStyle('display', 'block');
}