function setStartPage() {
	var b = document.body;
	var ua = navigator.userAgent;
	var ie = ua.indexOf("MSIE");
	var iever = parseInt(ua.substring(ie+5, ie+6));
	var os = ua.indexOf("Windows");
	if(ie > 0 && iever >= 5 && os > 0 && !window.opera){
		var homepage = "http://www.livedoor.com";
		var jumpto = "http://www.livedoor.com/r/set_recruit/";
		b.style.behavior = "url('#default#homepage')";
		var is_home = b.isHomePage(homepage) || b.isHomePage(homepage + "/");
		if(is_home) {
			alert("livedoor はすでにスタートページに設定されています。");
		} else {
			b.setHomePage(homepage + "/");
			is_home =
			b.isHomePage(homepage) || b.isHomePage(homepage + "/");
		}
		if(is_home) {
			document.location.replace(jumpto);
			} else {
			document.location.replace(homepage);
		}
	}
	else {
		document.location.href="http://helpguide.livedoor.com/start.html";
	}
}

function init () {
	document.getElementById("setstart").innerHTML = '<a href="javascript:setStartPage();">livedoorをホームに設定してください！</a>';
}