javascript 浏览器页面跳转

    if (elename.equalsIgnoreCase("back") || elename.equalsIgnoreCase("1"))
            return "<a href=\"javascript:window.history.back()\">后退</a>";
        else if (elename.equalsIgnoreCase("refresh")
                || elename.equalsIgnoreCase("2"))
            return "<a href=\"javascript:window.history.go(0)\">刷新</a>";
        else if (elename.equalsIgnoreCase("print")
                || elename.equalsIgnoreCase("3"))
            return "<a href=\"javascript:window.print();\">打印</a>";
        return "";