function returnObjById(id) {
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}
function number_check(value) {
    return (1 - (value % 2))
}
/*test for Safari 2 and adjust submenu positioning*/
function CheckSafari2() {
    var app = navigator.appVersion
    var safIndex = app.indexOf("Safari/")
    var browserName = "na"
    var version = app.substr(safIndex + 7, 3)
    //alert(version);
    if (app.match("Safari") && version < 500) {
        //browser is Safari
        browserName = "Safari"
        //alert(browserName + " " + version);
        return true
    }
    return false
}
function showDiv(div) {
    if (CheckSafari2()) {
        var d = returnObjById(div);
        d.style.visibility = 'visible';
        if (d.id == "dropmenu1") {
            d.style.left = '108px';
            var d2 = returnObjById("dropmenu2")
            d2.style.visibility = 'hidden';
        }
        if (d.id == "dropmenu2") {
            d.style.left = '20px';
            var d1 = returnObjById("dropmenu1")
            d1.style.visibility = 'hidden';
        }
    }
}
function hideDiv(div) {
    if (CheckSafari2()) {
        var d = returnObjById(div)
        d.style.visibility = 'hidden';
    }
}