var totalPage = "\u603b\u9875\u6570\uff1a"; //总页数：
var FirstPage = "\u9996\u9875"; //首页
var PrevPage  = "\u4e0a\u4e00\u9875"; //上一页
var LastPage  = "\u5c3e\u9875"; //尾页
var NextPage  = "\u4e0b\u4e00\u9875"; //下一页
var tz = "\u8df3\u8f6c"; //跳转
var yh = "\u8f93\u5165\u8981\u8df3\u8f6c\u7684\u9875\u53f7"; //输入要跳转的页号

function showPages(name) { //初始化属性
    this.name = name;      //对象名称
    this.page = 1;         //当前页数
    this.pageCount = 1;    //总页数
    this.argName = 'page'; //参数名
    this.showTimes = 1;    //打印次数
}

function showPages(name,p) { 
    this.name = name;      
    this.page = p;         
    this.pageCount = 1;    
    this.argName = 'page'; 
    this.showTimes = 1;    
}

showPages.prototype.getPage = function() { //丛url获得当前页数,如果变量重复只获取最后一个
    var args = location.search;
    var reg = new RegExp('[\?&]?' + this.argName + '=([^&]*)[&$]?', 'gi');
    var chk = args.match(reg);
    this.page = RegExp.$1;
}
showPages.prototype.checkPages = function() { //进行当前页数和总页数的验证
    if (isNaN(parseInt(this.page))) this.page = 1;
    if (isNaN(parseInt(this.pageCount))) this.pageCount = 1;
    if (this.page < 1) this.page = 1;
    if (this.pageCount < 1) this.pageCount = 1;
    if (this.page > this.pageCount) this.page = this.pageCount;
    this.page = parseInt(this.page);
    this.pageCount = parseInt(this.pageCount);
}
showPages.prototype.createHtml = function(mode) { //生成html代码
    var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
    if (mode == '' || typeof(mode) == 'undefined') mode = 0;
    switch (mode) {
				case 0 : //模式1 (页数,首页,前页,后页,尾页)
			strHtml += '<span class="count">页数: ' + this.page + ' / ' + this.pageCount + '</span>';
			strHtml += '<span class="number">';
			if (prevPage < 1) {
				strHtml += '<span title="首页">&laquo;</span>';
				strHtml += '<span title="上一页">&#8249;</span>';
			} else {
				strHtml += '<span title="首页"><a href="javascript:' + this.name + '.toPage(1);">&laquo;</a></span>';
				strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#8249;</a></span>';
			}
			for (var i = 1; i <= this.pageCount; i++) {
				if (i > 0) {
					if (i == this.page) {
						strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
					} else {
						strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
					}
				}
			}
			if (nextPage > this.pageCount) {
				strHtml += '<span title="下一页">&#8250;</span>';
				strHtml += '<span title="尾页">&raquo;</span>';
			} else {
				strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
				strHtml += '<span title="尾页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&raquo;</a></span>';
			}
			strHtml += '</span><br />';
			break;
        case 2 : //模式2 (前后缩略,页数,首页,前页,后页,尾页)
            strHtml += '<span class="count">' + totalPage + this.pageCount + '</span>';
            strHtml += '<span class="number">';
            if (prevPage < 1) {
                strHtml += '<span class="pageyes2">' + FirstPage + '</span>';
                strHtml += '<span class="pageyes2">' + PrevPage +'</span>';
            } else {
                strHtml += '<span><a class="pageno2" href="javascript:' + this.name + '.toPage(1);">' + FirstPage +'</a></span>';
                strHtml += '<span><a class="pageno2" href="javascript:' + this.name + '.toPage(' + prevPage + ');">' + PrevPage +'</a></span>';
            }
            if (this.page != 1) strHtml += '<span><a class="pageno" href="javascript:' + this.name + '.toPage(1);">1</a></span>';
            if (this.page >= 5) strHtml += '<span class="pagedot">...</span>';
            if (this.pageCount > this.page + 2) {
                var endPage = this.page + 2;
            } else {
                var endPage = this.pageCount;
            }
            for (var i = this.page - 2; i <= endPage; i++) {
                if (i > 0) {
                    if (i == this.page) {
                        strHtml += '<span class="pageyes">' + i + '</span>';
                    } else {
                        if (i != 1 && i != this.pageCount) {
                            strHtml += '<span><a class="pageno" href="javascript:' + this.name + '.toPage(' + i + ');">' + i + '</a></span>';
                        }
                    }
                }
            }
            if (this.page + 3 < this.pageCount) strHtml += '<span class="pagedot">...</span>';
            if (this.page != this.pageCount) strHtml += '<span><a class="pageno" href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">' + this.pageCount + '</a></span>';
            if (nextPage > this.pageCount) {
                strHtml += '<span class="pageyes2">' + NextPage + '</span>';
                strHtml += '<span class="pageyes2">' + LastPage + '</span>';
            } else {
                strHtml += '<span><a class="pageno2" href="javascript:' + this.name + '.toPage(' + nextPage + ');">' + NextPage + '</a></span>';
                strHtml += '<span><a class="pageno2" href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">' + LastPage + '</a></span>';
            }
            strHtml += '</span><br />';
            break;
        case 5 : //模式5 (输入框)
            strHtml += '<span class="input">';
            if (this.pageCount < 1) {
                strHtml += '<input type="text" name="toPage" value="No Pages" class="itext" disabled="disabled">';
                strHtml += '<input type="button" name="go" value=" " class="ibutton" disabled="disabled"></option>';
            } else {
                strHtml += '<input type="text" id="pageInput' + this.showTimes + '" value=" " class="itext" title="' + yh + '" onkeypress="return ' + this.name + '.formatInputPage(event);" onfocus="this.select()">';
                strHtml += '<input type="button" name="go" value="' + tz + '" class="ibutton" onclick="' + this.name + '.toPage(document.getElementById(\'pageInput' + this.showTimes + '\').value);"></option>';
            }
            strHtml += '</span>';
            break;
        default :
            strHtml = 'Javascript showPage Error: not find mode ' + mode;
            break;
    }
    return strHtml;
}
showPages.prototype.createUrl = function (page) { //生成页面跳转url
    if (isNaN(parseInt(page))) page = 1;
    if (page < 1) page = 1;
    if (page > this.pageCount) page = this.pageCount;
    var url = location.protocol + '//' + location.host + location.pathname;
    var args = location.search;
    var reg = new RegExp('([\?&]?)' + this.argName + '=[^&]*[&$]?', 'gi');
    args = args.replace(reg, '$1');
    if (args == '' || args == null) {
        args += '?' + this.argName + '=' + page;
    } else if (args.substr(args.length - 1, 1) == '?' || args.substr(args.length - 1, 1) == '&') {
        args += this.argName + '=' + page;
    } else {
        args += '&' + this.argName + '=' + page;
    }
    return url + args;
}
showPages.prototype.toPage = function(page) { //页面跳转
    var turnTo = 1;
    if (typeof(page) == 'object') {
        turnTo = page.options[page.selectedIndex].value;
    } else {
        turnTo = page;
    }
    self.location.href = this.createUrl(turnTo);
}
showPages.prototype.printHtml = function(mode) { //显示html代码
    this.getPage();
    this.checkPages();
    this.showTimes += 1;
    document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages"></div>');
    document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml(mode);

}
showPages.prototype.formatInputPage = function(e) { //限定输入页数格式
    var ie = navigator.appName == "Microsoft Internet Explorer" ? true : false;
    if (!ie) var key = e.which;
    else var key = event.keyCode;
    if (key == 8 || key == 46 || (key >= 48 && key <= 57)) return true;
    return false;
}