// JScript 文件
function layerDisplay() {
    var i, a = layerDisplay.arguments;
    var startYear = 1;
    var endYear = 5;

    for (i = startYear; i <= endYear; i++) {
        if (document.getElementById("aboutContent" + i) != null){
            document.getElementById("aboutContent" + i).style.display = "none";
        }
    }

    document.getElementById(a[0]).style.display = "block";
}