var rsv="";
function disp2(url){
    if( sbwin_closed(rsv) ) {
        rsv = window.open(url, 'reservation',"width=750,scrollbars=yes,toolbar=yes");
    } else {
        rsv.location.href=url;
    }
    rsv.focus();
}


function sbwin_closed(winVar) {
    var ua = navigator.userAgent;
    if( !winVar )
        if( ua.indexOf('MSIE 4')!=-1 && ua.indexOf('Win')!=-1 ) 
            return winVar.closed
        else return typeof winVar.document != 'object'
    else return true
}