function overLayer(name)
{
    document.images["news_img"].src = "images/news_over.gif";
    document.images["notice_img"].src = "images/notice_over.gif";

    if(name == "news") 
    {
        document.images[name + "_img"].src = "images/news.gif";
        document.all["notice_layer"].style.display = "none";
        document.all["news_layer"].style.display = "inline";
    }
    else
    {
        document.images[name + "_img"].src = "images/notice.gif";
        document.all["news_layer"].style.display = "none";
        document.all["notice_layer"].style.display = "inline";
    }
}