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 1 : 
       //模式1 (10页缩略,首页,前页,后页,尾页)
       strHtml += '<span class="count">' + this.page + ' / ' + this.pageCount + '页</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>';
       }
       
       //page1
       
     
       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">&#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;
   }
   return strHtml;
}
showPages.prototype.createHtml2 = function(mode,pageNo){ //生成html代码
   var strHtml = '', prevPage = pageNo - 1, nextPage = pageNo + 1;
   if (mode == '' || typeof(mode) == 'undefined') mode = 0;
   switch (mode) {
     case 1 : //模式1 (10页缩略,首页,前页,后页,尾页)
       strHtml += '<span class="count">' + pageNo + ' / ' + this.pageCount + '页</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>';
       }
       if (pageNo % 10 ==0) {
         var startPage = pageNo - 9;
       } else {
         var startPage = pageNo - pageNo % 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 == pageNo) {
           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">&#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;
   }
   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;
   }
   //location=this.createUrl(turnTo);
   document.getElementById("PICSHOW").src=IMG[turnTo-1];
   document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml2(1,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;
}