The address of the Web Page is wrong after login

The address of the Web Page is wrong after login

I am using asp.net and i am trying to login from the fancy box. I have
code sample like this :
function (LoginResponse) {
$.each(LoginResponse, function () {
if (this["IsLogin"] == "true") {
window.location.reload(true);
window.location.href =
"Account/MyProfile.aspx";
}
else {
jAlert('Warning!', 'Invalid login
Credintials', 'Please enter valid Username
and Password..', 'yellow');
}
clear_form_elements('#UserLoginSection');
//Clears the element of the form
});
}
);
Some time it goes well with this address "Account/MyProfile.aspx" But some
time The Address wrong and in the address bar something like this come
again and again "Account/Account/MyProfile.aspx" There should not be
Double Account meaning "Account/MyProfile.aspx" should be there. and I
have tried to remove Account in the javascript function above But some
time it works well but some time it does not. What i have to do please
help me.