function showPages(name) { 
  this.name = name;      
  this.page = 1;        
  this.pageCount = 1;    
  this.argName = 'page'; 
  this.showTimes = 1;    
}
showPages.prototype.getPage = function(){
  var args = location.search;
  var reg = new RegExp('[\?&]?' + this.argName + '=([^&]*)[&$]?', '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 2 : 
   strHtml += '<div id="main">';
   strHtml += '<div id="page">Страницы: ' + this.page + ' / ' + this.pageCount + '</div>';
   strHtml += '<div id="nav">';
   if (prevPage < 1) {
    strHtml += '<li id="fir"><<</li>';
    strHtml += '<li id="fir"><</li>';
   } else {
    strHtml += '<li ><a href="javascript:' + this.name + '.toPage(1);"><<</a></li>';
    strHtml += '<li ><a href="javascript:' + this.name + '.toPage(' + prevPage + ');"><</a></li>';
   }
   if (this.page != 1) strHtml += '<li><a href="javascript:' + this.name + '.toPage(1);">1</a></li>';
   if (this.page >= 5) strHtml += '<li>...</li>';
   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 += '<li id="sel">' + i + '</li>';
     } else {
      if (i != 1 && i != this.pageCount) {
       strHtml += '<li><a href="javascript:' + this.name + '.toPage(' + i + ');">' + i + '</a></li>';
      }
     }
    }
   }
   if (this.page + 3 < this.pageCount) strHtml += '<li>...</li>';
   if (this.page != this.pageCount) strHtml += '<li><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">' + this.pageCount + '</a></li>';
   if (nextPage > this.pageCount) {
    strHtml += '<li id="fir">></li>';
    strHtml += '<li id="fir">>></li>';
   } else {
    strHtml += '<li ><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">></a></li>';
    strHtml += '<li ><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">>></a></li>';
   }
   strHtml += '</div><br />';
   strHtml += '</div><br />';
   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 + '=[^&]*[&$]?', '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;
}