function toggle(obj) {
    var pms = document.getElementsByTagName("div");
    for (var i = 0; i < pms.length; i++) {
        if (pms[i].className.match(new RegExp("\\bdetails\\b")) &&
            pms[i].id != obj) {
            pms[i].style.display = "none";
        }
    }
    
    var display = document.getElementById(obj).style.display;
    if (display == "block") {
        display = "none";
    } else {        
        display = "block";
    }
    document.getElementById(obj).style.display = display;
    return false;
}