function checkform(f) {
	if (f.email.value=='') {
		alert('Please enter your email address.');
		return false;
	}
	if (f.email.value.search(/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i)==-1) {
		alert('Please enter a valid email address.');
		return false;
	}
	return true;
}

window.addEvent('domready', function() {
	if ($chk($('javascriptTest')) && $chk($('flashTest'))) {
		$('javascriptTest').set('value', 'Enabled');
		if (Browser.Plugins.Flash.version>0) $('flashTest').set('value', Browser.Plugins.Flash.version + '.' + Browser.Plugins.Flash.build);
		else $('flashTest').set('value', 'Not detected');
	}
});