window.onload = function () {
    if (document.getElementsByClassName == undefined) {
        document.getElementsByClassName = function (className) {
            var hasClassName = new RegExp("(?:^|\\s)" + className + "(?:$|\\s)");
            var allElements = document.getElementsByTagName("*");
            var results = [];

            var element;
            for (var i = 0; (element = allElements[i]) != null; i++) {
                var elementClass = element.className;
                if (elementClass && elementClass.indexOf(className) != -1 && hasClassName.test(elementClass))
                    results.push(element);
            }

            return results;
        }
    }
    inputRounded();
}

function inputRounded() {
    var c = document.getElementsByClassName('btnInputBigRound');
    for (var i = 0; i < c.length; i++) {
        var e = c[i];
        e.innerHTML += '<span class="btnInputBigRoundLeft">&nbsp;</span><span class="btnInputBigRoundRight">&nbsp;</span>';
    }
}