var browser = navigator.userAgent.toLowerCase();
var opera = (browser.indexOf("opera") != -1);
var ie = ((browser.indexOf("msie") != -1) && (browser.indexOf("opera") == -1));

function gourl(url, targetwin) {
    if(targetwin != '') {
        window.open(url, targetwin);
    } else {
        document.location.href = url;
    }
    return false;
}

function highlight(Elem, high) {
    if(high == true) Elem.className = 'menuitemhigh';
    else Elem.className = 'menuitem';
    
    return false;
}

function subhighlight(Elem, high) {
    if(high == true) Elem.className = 'submenuitemhigh';
    else Elem.className = 'submenuitem';
    
    return false;
}

function popupurl(url, width, height) {
    var top = (screen.height - height) / 2;
    var left = (screen.width - width) / 2;
    
    window.open(url,'popup','left=' + left + ', top=' + top + ', width=' + width + ', height=' + height + ', scrollbars=1, status=0');
    return false;
}