path: root/underlays/javascript/toggle.js

// Uses CSS to hide toggleables, to avoid any flashing on page load. The
// CSS is only emitted after it tests that it's going to be able
// to show the toggleables.
if (document.getElementById && document.getElementsByTagName && document.createTextNode) {
    document.write('<style type="text/css">div.toggleable { display: none; }</style>');
    hook("onload", inittoggle);
}

function inittoggle() {
    var as = getElementsByClass('toggle');
    for (var i = 0; i < as.length; i++) {
        var id = as[i].href.match(/#(\w.+)/)[1];
        if (document.getElementById(id).className == "toggleable")
            document.getElementById(id).style.display="none";
        as[i].onclick = function() {
            toggle(this);
            return false;
        }
    }
}

function toggle(s) {
    var id = s.href.match(/#(\w.+)/)[1];
    style = document.getElementById(id).style;
    if (style.display == "none")
        style.display = "block";
    else
        style.display = "none";
}