function login() {
var popurl="https://webmailcluster.1und1.de/xml/webmail/Login;jsessionid=C10DC856E9418E362447888D1502C853.TC158a?__reuse=1185568094010"
winpops=window.open(popurl,"","width=1000,height=426, scrolling=yes")
}

function check()
{
	input_box=confirm("Sind Sie sicher?");
	if (input_box==true)

	{ 
	// Output when OK is clicked
	return true;
	}

	else
	{
	// Output when Cancel is clicked
	return false;
	}
}