function contact(url) {
	SubWindow=window.open(url,"contact","width=680,height=700,toolbar=0,location=0,status=0,menubar=1,scrollbars=1,resizable=1");
	SubWindow.focus();
}

function start_tour() {
window.open('/shanai/introduction.html', 'win', 'width=585, height=540, menubar=no, toolbar=no, scrollbars=yes');
}