function setActiveStyleSheet(title) {
    var i, a, main;

    for (i = 0; (a = document.getElementsByTagName("link")[i]); i++) {
        if (a.getAttribute("title")) {

            if (a.disabled == false) {
                a.disabled = true;
            }

            if (a.getAttribute("title") == title) {
                a.disabled = false;
            }
        }

    }
}