// Opacity and Fade in script.
function SetOpacity(object, opacityPct) {
    // IE.
    object.style.filter = 'alpha(opacity=' + opacityPct + ')';
    // Old mozilla and firefox
    object.style.MozOpacity = opacityPct / 100;
    // Everything else.
    object.style.opacity = opacityPct / 100;
}
function ChangeOpacity(id, msDuration, msStart, fromO, toO) {
    var element = document.getElementById(id);
    var opacity = element.style.opacity * 100;
    var msNow = (new Date()).getTime();
    opacity = fromO + (toO - fromO) * (msNow - msStart) / msDuration;
    if (opacity < 0)
        SetOpacity(element, 0)
    else if (opacity > 100)
        SetOpacity(element, 100)
    else {
        SetOpacity(element, opacity);
        element.timer = window.setTimeout("ChangeOpacity('" + id + "'," + msDuration + "," + msStart + "," + fromO + "," + toO + ")", 1);
    }
}
function FadeIn(id) {
    var element = document.getElementById(id);
    if (element.timer) window.clearTimeout(element.timer);
    var startMS = (new Date()).getTime();
    element.timer = window.setTimeout("ChangeOpacity('" + id + "',1000," + startMS + ",0,100)", 1);
}
function FadeOut(id) {
    var element = document.getElementById(id);
    if (element.timer) window.clearTimeout(element.timer);
    var startMS = (new Date()).getTime();
    element.timer = window.setTimeout("ChangeOpacity('" + id + "',1000," + startMS + ",100,0)", 1);
}
function FadeInImage(foregroundID, newImage, backgroundID) {
    var foreground = document.getElementById(foregroundID);
    if (backgroundID) {
        var background = document.getElementById(backgroundID);
        if (background) {
            background.style.backgroundImage = 'url(' + foreground.src + ')';
            background.style.backgroundRepeat = 'no-repeat';
        }
    }
    SetOpacity(foreground, 0);
    foreground.src = newImage;
    if (foreground.timer) window.clearTimeout(foreground.timer);
    var startMS = (new Date()).getTime();
    foreground.timer = window.setTimeout("ChangeOpacity('" + foregroundID + "',750," + startMS + ",0,100)", 10);
}