﻿function showPages(name) {
 this.name = name;
 this.page = 1;
 this.pageCount = 10;
 this.argName = 'Page';
 this.showTimes = 1;
}

showPages.prototype.getPage = function(){
 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(){
 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){
 var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
 if (mode == '' || typeof(mode) == 'undefined') mode = 0;
 switch (mode) {
  case 0 :
   //strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="number">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page"><a><img src="script/first.gif" align=absmiddle></a></span>';
    //strHtml += '<span title="Prev Page">&lt;</span>';
   } else {
    strHtml += '<span title="First Page"><a><img src="script/first.gif" align=absmiddle onclick="javascript:' + this.name + '.toPage(1);"></a></span>';
    //strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&lt;</a></span>';
   }
   for (var i = 1; i <= this.pageCount; i++) {
    if (i > 0) {
     if (i == this.page) {
      strHtml += '<span title="Page ' + i + '"><a>' + i + '</a></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">&gt;</span>';
    strHtml += '<span title="Last Page"><img src="script/last.gif" align=absmiddle></span>';
   } else {
    //strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&gt;</a></span>';
    strHtml += '<span title="Last Page"><a><img src="script/last.gif" align=absmiddle onclick="javascript:' + this.name + '.toPage(' + this.pageCount + ');"></a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 1 :
   strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="number">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page">First</span>';
    strHtml += '<span title="Prev Page">&lt;</span>';
   } else {
    strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">First</a></span>';
    strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&lt;</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">&gt;</span>';
    strHtml += '<span title="Last Page">Last</span>';
   } else {
    strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&gt;</a></span>';
    strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">Last</a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 2 :
   strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="number">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page">First</span>';
    strHtml += '<span title="Prev Page">&lt;</span>';
   } else {
    strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">First</a></span>';
    strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">&lt;</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">&gt;</span>';
    strHtml += '<span title="Last Page">Last</span>';
   } else {
    strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">&gt;</a></span>';
    strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">Last</a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 3 :
   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 :
   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 :
   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) {
 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){
 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){
 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){
 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;
}
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