/*#region Pager*/
var Pager = {};
Pager.PageIndex = 1;
Pager.PageSize = 30;
Pager.ShowPageCount = 5;
Pager.TotalCount = 0;
Pager.UrlFormat = location.href + "?page={0}";
Pager.ClickFunctionName = "";
Pager.Build = function (node) {
    $(node).html('');
    var sumPage = parseInt((this.TotalCount + this.PageSize - 1) / this.PageSize);
    var start = this.PageIndex - this.ShowPageCount;
    var end = this.PageIndex + this.ShowPageCount;
    if (sumPage > (this.ShowPageCount * 2 - 1)) {
        if (start < 1) {
            start = 1;
            end = start + 2 * this.ShowPageCount;
        }
        else if (end > sumPage) {
            start = sumPage - 2 * this.ShowPageCount;
            end = sumPage;
        }
    }
    else {
        start = 1;
        end = sumPage;
    }

    var fragment = document.createDocumentFragment();
    if (this.PageIndex > 1) {
        fragment.appendChild(this.BuildLink("&lt; Prev", this.PageIndex - 1));
        if (this.PageIndex > this.ShowPageCount) {
            fragment.appendChild(this.BuildLink(1, 1));
        }
        if (start > 2) {
            fragment.appendChild(document.createTextNode("···"));
        }
    }

    for (i = start; i <= end; i++) {
        if (i == this.PageIndex) {
            var span = document.createElement("span");
            $(span).prop("class", "current");
            span.innerHTML = this.PageIndex;
            fragment.appendChild(span);
        }
        else {
            fragment.appendChild(this.BuildLink(i, i));
        }
    }

    if (this.PageIndex < sumPage) {
        if (end < sumPage) {
            fragment.appendChild(document.createTextNode("···"));
            fragment.appendChild(this.BuildLink(sumPage, sumPage, this.TotalCount));
        }
        fragment.appendChild(this.BuildLink("Next &gt;", this.PageIndex + 1, this.TotalCount));
    }
    $(node).html(fragment);
}

Pager.BuildLink = function (pageTitle, pageIndex) {
    var a = document.createElement("a");
    if (this.ClickFunctionName) {
        a.href = "javascript:void(0);";
        var js = this.ClickFunctionName + "(" + pageIndex + ");Pager.SetCurrent(" + pageIndex + ");";
        a.onclick = function() { eval(js); }
    }
    else {
        a.href = this.UrlFormat.replace("{0}", pageIndex);
    }
    a.innerHTML = pageTitle;
    return a;
}

Pager.SetCurrent = function (pageIndex) {
    this.PageIndex = pageIndex;
    if (this.PageIndex > 1) {
        this.Build($("#pager_top"));
    }
    this.Build($("#pager_bottom"));
}
/*#endregion Pager*/