var _agent=navigator.userAgent.toLowerCase();
	var _win=(_agent.indexOf("win")!=-1);
	var _mac=(_agent.indexOf("mac")!=-1);
	var _ie5=(document.all&&document.getElementById);
function SetPage(){
	if(_win&&_ie5){
		homepageset.style.behavior= "url(#default#homepage)";
		homepageset.setHomePage("http://www.city.nagano.nagano.jp/");
	}
	else {
		location.href="#";
	}
}