if (navigator.appVersion.indexOf("2.") != -1)
{
                check = false;
}
if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1))
{
                check = false;

}
else
{
                check = true;

}
if (check == true)
{
        signin = new Image();
        signin.src = "images/toytokyo/signin_1.gif";
        signinon = new Image();
        signinon.src = "images/toytokyo/signin_f2.gif";

        newacc = new Image();
        newacc.src = "images/toytokyo/newaccount_1.gif";
        newaccon = new Image();
        newaccon.src = "images/toytokyo/newaccount_f2.gif";


}

var imageStay = "";

function  rolloff(name){
        if (check == true){
                if (imageStay != name){
                        document[name].src = eval(name + ".src");}
        }
}

function rollon(name){
        if (check == true){
                if (imageStay != name){
                        document[name].src = eval(name + "on.src");
                }
        }
}