function swapPane(btn) {
    var allBtnContainer = btn.parentNode.parentNode;
    var allBtns = allBtnContainer.getElementsByTagName("a");
    var allPanes = document.getElementsByTagName("div");
    var buttonNumber = 0;
    var paneNumber = 0;
    var i;
    for (i = 0; i < allBtns.length; i++) {
        allBtns[i].className = "off";
        if (allBtns[i] == btn) {
            allBtns[i].className = "on";
            buttonNumber = i;
        }
    }
    var k;
    for (k = 0; k < allPanes.length; k++) {
        if (allPanes[k].className.indexOf("selector_pane") !=-1 && allPanes[k].className.indexOf("_container")==-1) {
            allPanes[k].className = "selector_pane";
            if (paneNumber == buttonNumber) {
                allPanes[k].className = allPanes[k].className + " on";
            }
            paneNumber++;
        }
    }
}

function ie6() {
    if (navigator.userAgent.toLowerCase().match("msie 6")) {
        return true;
    }
    else {
        return false;
    }
}
function siteHeight() {
    return window.clientHeight;
}
function header() {
    if (ie6()) {
        var siteHeader = document.getElementById("website_header_container");
        var siteHeight = document.getElementById("website_container").clientHeight;
        siteHeader.style.marginTop = "-" + siteHeight + "px";
    }
}