function openWin(adr,w,h) {

  LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
  TopPosition = (screen.height) ? (screen.height-h)/2 : 0;

  myWin1 = open(adr, "displayWindow",
    "width="+w+",height="+h+",top="+TopPosition+",left="+LeftPosition+",status=no,toolbar=no,menubar=no,scrollbars=yes");

  myWin1.focus();

}

function getBrowserInfo() {
 var t,v = undefined;
 if (window.opera) t = 'Opera';
 else if (document.all) {
  t = 'IE';
  var nv = navigator.appVersion;
  var s = nv.indexOf('MSIE')+5;
  v = nv.substring(s,s+1);
 }
 else if (navigator.userAgent.toLowerCase().indexOf('chrome') > -1){ t = 'Chrome'; }
 else if (navigator.appName) t = 'Netscape';
 return {type:t,version:v};
}

function bookmark(a){
 var url = window.document.location;
 var title = window.document.title;
 var b = getBrowserInfo();
 if (b.type == 'IE' && 9 > b.version && b.version >= 4) window.external.AddFavorite(url,title);
 else if (b.type == 'Opera') {
  a.href = url;
  a.rel = "sidebar";
  a.title = url+','+title;
  return true;
 }
 else if (b.type == "Chrome"){ alert("Нажмите CTRL-D, чтобы добавить страницу в закладки."); }
 else if (b.type == "Netscape") window.sidebar.addPanel(title,url,"");
 else alert("Нажмите CTRL-D, чтобы добавить страницу в закладки.");
 return false;
}