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 + '=([^&]*)[ && #36;]?', '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">&laquo;</span>';
     strHtml += '<span title="Prev Page">&#8249;</span>';
     } else {
     strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&laquo;</a></span>';
     strHtml += '<span title="Prev Page"><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="Next Page">&#8250;</span>';
     strHtml += '<span title="Last Page">&raquo;</span>';
     } else {
     strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
     strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&raquo;</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">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
     strHtml += '<span class="number">';
     if (prevPage < 1) {
     strHtml += '<span title="First Page">&laquo;</span>';
     strHtml += '<span title="Prev Page">&#8249;</span>';
     } else {
     strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&laquo;</a></span>';
     strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#8249;</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="Prev 10 Pages"><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="Page ' + i + '">[' + i + ']</span>';
     } else {
         strHtml += '<span title="Page ' + i + '"><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="Next Page">&#8250;</span>';
     strHtml += '<span title="Last Page">&raquo;</span>';
     } else {
     strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
     strHtml += '<span title="Last Page"><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">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
     strHtml += '<span class="number">';
     if (prevPage < 1) {
     strHtml += '<span title="First Page">&laquo;</span>';
     strHtml += '<span title="Prev Page">&#8249;</span>';
     } else {
     strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">&laquo;</a></span>';
     strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&#8249;</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 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>';
     if (nextPage > this.pageCount) {
     strHtml += '<span title="Next Page">&#8250;</span>';
     strHtml += '<span title="Last Page">&raquo;</span>';
     } else {
     strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&#8250;</a></span>';
     strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">&raquo;</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;
     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 + '=[^&]*[ && #36;]?', '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;
    }