var W3CDOM = (document.createElement && document.getElementsByTagName);

function initFileUploads() {
    if (!W3CDOM) return;
    var fakeFileUpload = document.createElement('div');
    fakeFileUpload.className = 'fakefile';
    fakeFileUpload.appendChild(document.createElement('input'));
    var image = document.createElement('img');
    image.src = '/img/lzcontest/ButtonSelectVideo.gif';
    fakeFileUpload.appendChild(image);
    var x = document.getElementsByTagName('input');
    for (var i = 0; i < x.length; i++) {
        if (x[i].type != 'file') continue;
        if (x[i].parentNode.className != 'fileinputs') continue;
        x[i].className = 'file hidden';
        var clone = fakeFileUpload.cloneNode(true);
        x[i].parentNode.appendChild(clone);
        x[i].relatedElement = clone.getElementsByTagName('input')[0];
        x[i].onchange = x[i].onmouseout = function() {
            this.relatedElement.value = xtractFile(this.value);
        }
    }
}

function xtractFile(data) {
    data = data.replace(/^\s|\s$/g, "");

    if (/\.\w+$/.test(data)) {
        var m = data.match(/([^\/\\]+)\.(\w+)$/);
        if (m)
            return m[1] + "." + m[2];
        else
            return "";
    } else {
        var m = data.match(/([^\/\\]+)$/);
        if (m)
            return m[1];
        else
            return "";
    }
}