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.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' && 7 > 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 == "Netscape") window.sidebar.addPanel(title,url,"");
 else alert("Нажмите CTRL-D, чтобы добавить страницу в закладки.");
 return false;
}

 
function getCookie(name) {
	var cookie = " " + document.cookie;
	var search = " " + name + "=";
	var setStr = null;
	var offset = 0;
	var end = 0;
	if (cookie.length > 0) {
		offset = cookie.indexOf(search);
		if (offset != -1) {
			offset += search.length;
			end = cookie.indexOf(";", offset)
			if (end == -1) {
				end = cookie.length;
			}
			setStr = unescape(cookie.substring(offset, end));
		}
	}
	return(setStr);
}


function setCookie(name, value, expires, path, domain, secure) {
  if (!name || !value) return false;
  var str = name + '=' + encodeURIComponent(value);
  if (expires) str += '; expires=' + expires;
  if (path)    str += '; path=' + path;
  if (domain)  str += '; domain=' + domain;
  if (secure)  str += '; secure';
  document.cookie = str;
  return true;
}
 
function deleteCookie(name, path, domain) {
   setCookie(name, null, new Date(0), path, domain);
   return true;
}

function ChangeTitleSize(cook) {
  tData = new Date();
  tData.setFullYear(tData.getFullYear() + 1);
  tf = getCookie(cook);
  if (tf == 'high'){
   setCookie(cook, "low", tData.toGMTString(), "/");
   document.getElementById('head_big').style.display='none';
   document.getElementById('head_small').style.display='block';
  } else {
   setCookie(cook, "high", tData.toGMTString(), "/");
   document.getElementById('head_big').style.display='block';
   document.getElementById('head_small').style.display='none';
  }
}


function SetTitleSize(cook) {
  tf = getCookie(cook);
  if (tf == 'low'){
   document.getElementById('head_big').style.display='none';
   document.getElementById('head_small').style.display='block';
  } else {
   document.getElementById('head_big').style.display='block';
   document.getElementById('head_small').style.display='none';
  }
  return false;
}