// JavaScript Document
String.prototype.trim = function () {
    var str = this,
    str = str.replace(/^\s+/, '');
    for (var i = str.length - 1; i >= 0; i--) {
        if (/\S/.test(str.charAt(i))) {
            str = str.substring(0, i + 1);
            break;
        }
    }
    return str;
}
Array.prototype.Contain = function (item) {
    var array = this;
    for (var i = array.length - 1; i >= 0; i--) {
        if (array[i] == item)
            return true;
    }
    return false;
}
/*取cookies*/
var getCookie = function (c_name) {
    if (document.cookie.length > 0) {
        c_start = document.cookie.indexOf(c_name + "=");
        if (c_start != -1) {
            c_start = c_start + c_name.length + 1;
            c_end = document.cookie.indexOf(";", c_start);
            if (c_end == -1) c_end = document.cookie.length;
            return decodeURIComponent(document.cookie.substring(c_start, c_end));
        }
    }
    return "";
}
//设为首页
var sethomepage = function (url) {
    if (document.all) {
        document.body.style.behavior = 'url(#default#homepage)';
        document.body.setHomePage(window.location.href);
    } else if (window.sidebar) {
        if (window.netscape) {
            try {
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
            } catch (e) {
                alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true");
            }
        }
        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
        prefs.setCharPref('browser.startup.homepage', window.location.href);
    } else {
        alert('您的浏览器不支持自动设置首页, 请使用浏览器菜单手动设置!');
    }
}
//加入收藏
var addfav = function () {
    if (document.all) {
        try {
            window.external.addFavorite(window.location.href, document.title);
        } catch (e) {
            alert("加入收藏失败，请使用Ctrl+D进行添加");
        }

    } else if (window.sidebar) {
        window.sidebar.addPanel(document.title, window.location.href, "");
    } else {
        alert("加入收藏失败，请使用Ctrl+D进行添加");
    }
}
//图片缩放 参数(图片,允许的宽度,允许的高度)
function DrawImage(ImgD, iwidth, iheight) {
    var image = new Image();
    image.src = ImgD.src;
    if (image.width > 0 && image.height > 0) {
        if (0==iheight||(image.width / image.height) >= (iwidth / iheight)) {
            if (image.width > iwidth) {
                ImgD.width = iwidth;
                ImgD.height = (image.height * iwidth) / image.width;
            } else {
                ImgD.width = image.width;
                ImgD.height = image.height;
            }
        }
        else {
            if (image.height > iheight) {
                ImgD.height = iheight;
                ImgD.width = (image.width * iheight) / image.height;
            } else {
                ImgD.width = image.width;
                ImgD.height = image.height;
            }
        }
    }
}

/*********瀑布流图片展示***********/
//var config = {
//	CellCount:3,
//	CellSeparated:0,
//	CellWidth:320,
//	RowSepareted:0,
//	BoxId:"",
//	Item:"",
//  More_bottom:"",
//	More_url:""
//};
var flowImage = function (config)
{
    var _cell = new Array(config.CellCount);
    var _box = $(config.BoxId);
    var _index = 0;
    var _itemIndex = 0;
    var pageIndex = 2;

    var Init = function ()
    {
        var _cellItem = { left: 0,top: 0 };
        _cell[0] = { left: 0,top: 0 };
        for (var i = 1; i < config.CellCount; i++)
        {
            _cell[i] = { left: _cell[i - 1].left + config.CellSeparated + config.CellWidth,top: 0 };
        }
        _index = GetCell(); _itemIndex = 0; _pageIndex = 1;
    };

    var Flow = function ()
    {
        InitItem(_box.children(config.Item));
        _box.height(GetMaxCellTop());
    };
    var InitItem = function (list)
    {
        for (var i = _itemIndex; i < list.length; i++)
        {
            var $this = list.eq(i);
            var $img = $this.find("img");
            DrawImage($img[0],312,0);
            $this.css({ top: _cell[_index].top,left: _cell[_index].left,position: "absolute",display: "block" });
            _cell[_index].top = _cell[_index].top + $img.height() + 70 + config.RowSepareted;
            _index = GetCell();
        }
        _itemIndex = list.length;
    };
    var GetCell = function ()
    {
        var top = _cell[0].top,index = 0;
        if (0 == top) { return 0; }
        for (var i = 1; i < _cell.length; i++)
        {
            if (0 == _cell[i].top) { index = i; break; }
            if (_cell[i].top < top) { top = _cell[i].top; index = i; }
        }
        return index;
    };
    var GetMaxCellTop = function ()
    {
        var top = _cell[0].top;
        for (var i = 1; i < _cell.length; i++)
        {
            if (_cell[i].top > top) { top = _cell[i].top; }
        }
        return top;
    };

    Init(); Flow();
    $(config.More_bottom).click(function ()
    {
        var url = config.More_url;
        if (url.indexOf("?") == -1)
        {
            url = url + "?page=" + pageIndex;
        }
        else
        {
            url = url + "&page=" + pageIndex;
        }
        $.ajax({
            type: "GET",
            url: url,
            dataType: "html",
            cache: false,
            success: function (html)
            {
                _box.append(html);
                Flow();
            }
        });
        pageIndex++;
    });
}