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
}

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">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
            strHtml += '<span class="number">';
            if (prevPage < 1) {
                strHtml += '<span title="First Page">&#171;</span>';
                strHtml += '<span title="Prev Page">&#139;</span>';
            } else {
                strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
                strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</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="Next Page">&#155;</span>';
                strHtml += '<span title="Last Page">&#187;</span>';
            } else {
                strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
                strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
            }
            strHtml += '</span><br />';
            break;
        case 1 : //模式1 (10页缩略,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="第一页">&#171;</span>';
                strHtml += '<span title="上一页">&#139;</span>';
            } else {
                strHtml += '<span title="第一页"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
                strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</a></span>';
            }
            if (this.page % 10 ==0) {
                var startPage = this.page - 9;
            } else {
                var startPage = this.page - this.page % 10 + 1;
            }
            if (startPage > 10) strHtml += '<span title="下10页"><a href="javascript:' + this.name + '.toPage(' + (startPage - 1) + ');">...</a></span>';
            for (var i = startPage; i < startPage + 10; i++) {
                if (i > this.pageCount) break;
                if (i == this.page) {
                    strHtml += '<span title="第 ' + i + '"页>[' + i + ']</span>';
                } else {
                    strHtml += '<span title="第' + i + '"页><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
                }
            }
            if (this.pageCount >= startPage + 10) strHtml += '<span title="Next 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage + 10) + ');">...</a></span>';
            if (nextPage > this.pageCount) {
                strHtml += '<span title="下一页">&#155;</span>';
                strHtml += '<span title="最后一页">&#187;</span>';
            } else {
                strHtml += '<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
                strHtml += '<span title="最后一页"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
            }
            strHtml += '</span><br />';
            break;
        case 6 : //模式2 (前后缩略,页数,首页,前页,后页,尾页)
            //strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
            strHtml += '<span class="number">';
            if (prevPage < 1) {
                //strHtml += '<span title="First Page">&#171;</span>';
                strHtml += '<span title="Prev Page">&nbsp;&#139; 上一页&nbsp;</span>';
            } else {
                //strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
                strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#139; 上一页</a></span>';
            }
            if (this.page != 1) strHtml += '<span title="Page 1"><a href="javascript:' + this.name + '.toPage(1);">1</a></span>';
            if (this.page >= 5) strHtml += '<span>...</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 id="selectPage" title="Page ' + i + '">' + i + '</span>';
                        strHtml +=  i ;
                    } else {
                        if (i != 1 && i != this.pageCount) {
                            strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">' + i + '</a></span>';
                        }
                    }
                }
            }
            if (this.page + 3 < this.pageCount) strHtml += '<span>&nbsp;&nbsp;...&nbsp;&nbsp;</span>';
            if (this.page != this.pageCount) strHtml += '<span title="Page ' + this.pageCount + '"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">' + this.pageCount + '</a></span>';
            if (nextPage > this.pageCount) {
                strHtml += '<span title="Next Page">&nbsp;下一页 &#155;&nbsp;</span>';
                //strHtml += '<span title="Last Page">&#187;</span>';
            } else {
                strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">下一页 &#155;</a></span>';
                //strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
            }
            strHtml += '</span><br />';
            break;
        case 3 : //模式3 (箭头样式,首页,前页,后页,尾页) (only IE)
            strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
            strHtml += '<span class="arrow">';
            if (prevPage < 1) {
                strHtml += '<span title="First Page">9</span>';
                strHtml += '<span title="Prev Page">7</span>';
            } else {
                strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">9</a></span>';
                strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">7</a></span>';
            }
            if (nextPage > this.pageCount) {
                strHtml += '<span title="Next Page">8</span>';
                strHtml += '<span title="Last Page">:</span>';
            } else {
                strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">8</a></span>';
                strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">:</a></span>';
            }
            strHtml += '</span><br />';
            break;
        case 4 : //模式4 (下拉框)
            if (this.pageCount < 1) {
                strHtml += '<select name="toPage" disabled>';
                strHtml += '<option value="0">No Pages</option>';
            } else {
                var chkSelect;
                strHtml += '<select name="toPage" onchange="' + this.name + '.toPage(this);">';
                for (var i = 1; i <= this.pageCount; i++) {
                    if (this.page == i) chkSelect=' selected="selected"';
                    else chkSelect='';
                    strHtml += '<option value="' + i + '"' + chkSelect + '>Pages: ' + i + ' / ' + this.pageCount + '</option>';
                }
            }
            strHtml += '</select>';
            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="GO" class="ibutton" disabled="disabled"></option>';
            } else {
                strHtml += '<input type="text" value="Input Page:" class="ititle" readonly="readonly">';
                strHtml += '<input type="text" id="pageInput' + this.showTimes + '" value="' + this.page + '" class="itext" title="Input page" onkeypress="return ' + this.name + '.formatInputPage(event);" onfocus="this.select()">';
                strHtml += '<input type="text" value=" / ' + this.pageCount + '" class="icount" readonly="readonly">';
                strHtml += '<input type="button" name="go" value="GO" class="ibutton" onclick="' + this.name + '.toPage(document.getElementById(\'pageInput' + this.showTimes + '\').value);"></option>';
            }
            strHtml += '</span>';
            break;
        case 2 : //新添加的样式
            //strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
            //strHtml += '<span class="number">';
            if (prevPage < 1) {
                //strHtml += '<span title="First Page">&#171;</span>';
                strHtml += '<span title="上一页">上一页</span>&nbsp;&nbsp;&nbsp;&nbsp;';
            } else {
                //strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
                strHtml += '<span title="上一页"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">上一页</a></span>&nbsp;&nbsp;&nbsp;&nbsp;';
            }
            //if (this.page != 1) strHtml += '<span title="Page 1"><a href="javascript:' + this.name + '.toPage(1);">[1]</a></span>';
            //if (this.page >= 5) strHtml += '<span>...</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 title="Page ' + i + '">[' + i + ']</span>';
//                    } else {
//                        if (i != 1 && i != this.pageCount) {
//                            strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
//                        }
//                    }
//                }
//            }
            //if (this.page + 3 < this.pageCount) strHtml += '<span>...</span>';
            //if (this.page != this.pageCount) strHtml += '<span title="Page ' + this.pageCount + '"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">[' + this.pageCount + ']</a></span>';
            strHtml += '当前第' + this.page +'/'+this.pageCount+ '页';
            if (nextPage > this.pageCount) {
                strHtml += '&nbsp;&nbsp;&nbsp;&nbsp;<span title="下一页">下一页</span>';
                //strHtml += '<span title="Last Page">&#187;</span>';
            } else {
                strHtml += '&nbsp;&nbsp;&nbsp;&nbsp;<span title="下一页"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">下一页</a></span>';
                //strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
            }
            strHtml += '</span><br />';
            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;
}