// OS判定
function get_os_ver(){
    var os_ver;
    if(navigator.userAgent.indexOf("Mac") != -1){
        if(navigator.userAgent.indexOf("Mac OS X") != -1){
            os_ver = 'MACOSX';
        } else {
            os_ver = 'MACOS9';
        }
    } else if (navigator.userAgent.indexOf("NT 5.0") != -1){ // 2000
        os_ver = 'W2000';
    } else if (navigator.userAgent.indexOf("Windows 98") != -1){ // Me以前
        os_ver = 'WME';
    } else if (navigator.userAgent.indexOf("Win98") != -1){ // Me以前
        os_ver = 'WME';
    } else if (navigator.userAgent.indexOf("Win 9x") != -1){ // Me以前
        os_ver = 'WME';
    } else if (navigator.userAgent.indexOf("Windows") != -1){ // XP以降
        os_ver = 'XP'; // XP以降
    }
    return os_ver ;
}

function cssSelect()
{
    var os_ver = get_os_ver();    
    var explorer=(navigator.appName.indexOf("Explorer")!=-1);
    var firefox=(navigator.userAgent.indexOf("Firefox") !=-1);
    var opera=(navigator.userAgent.indexOf("Opera")!=-1);
    var safari=(navigator.userAgent.indexOf("Safari")!=-1);
    if(firefox)
    {
        document.write('<link rel="stylesheet" type="text/css" href="/risoushoten/vs-rsrc/firefox.css" >');
        if(os_ver != "MACOSX")
        {
            document.write('<link rel="stylesheet" type="text/css" href="/risoushoten/vs-rsrc/firefoxWin.css" >');
        }
    }
    else if(safari)
    {
        document.write('<link rel="stylesheet" type="text/css" href="/risoushoten/vs-rsrc/safari.css" >');
        if(os_ver != "MACOSX")
        {
            document.write('<link rel="stylesheet" type="text/css" href="/risoushoten/vs-rsrc/safariWin.css" >');
        }
    }
    else if(explorer)
    {
        document.write('<link rel="stylesheet" type="text/css" href="/risoushoten/vs-rsrc/explorer.css" >');
        
        if(navigator.userAgent.indexOf("MSIE 6.0")!=-1)
        {
            document.write('<link rel="stylesheet" type="text/css" href="/risoushoten/vs-rsrc/explorer6.css" >');
        }
    }
}


function setStatus(myCookie,myValue,myDay){
	myExp = new Date();
	myExp.setTime(myExp.getTime()+(myDay*24*60*60*1000));
	myItem = "vs" + myCookie + "=" + escape(myValue) + ";";
	myExpires = "expires="+myExp.toGMTString();
	document.cookie =  myItem + "path=/;" + myExpires;
}
function getStatus(myCookie){
	myCookie = "vs" + myCookie + "=";
	myValue = null;
	myStr = document.cookie + ";" ;
	myOfst = myStr.indexOf(myCookie);
	if (myOfst != -1){
		myStart = myOfst + myCookie.length;
		myEnd   = myStr.indexOf(";" , myStart);
		myValue = unescape(myStr.substring(myStart,myEnd));
	}
	return myValue;
}

function goback()
{	
	history.go(-1);
}