function oForm(subject) {
	if (subject != '') {
		window.open('http://www.oldrichlempera.cz/contact-forms/restaurace-sport/form.php' + '?subject=' + subject, '_blank', 'toolbar=0,menubar=0,location=no,directories=no,scrollbars=no,resizable=yes,status=no,width=600,height=641,top=0,left=0');
	} else {
		window.open('http://www.oldrichlempera.cz/contact-forms/restaurace-sport/form.php?subject=Dotaz', '_blank', 'toolbar=0,menubar=0,location=no,directories=no,scrollbars=no,resizable=yes,status=no,width=600,height=641,top=0,left=0');
	}
}