function nm_filter(e){
        var nn=e.keyCode? e.keyCode : e.charCode;
        if(nn==13){
		document.login.upass.focus(); return false;
        }
}
function pw_filter(e){
        var nn=e.keyCode? e.keyCode : e.charCode;
        if(nn==13){
		document.login.submit();
        }
}