function set_cookie ( name, value)
{
  var cookie_string = name + "=" + escape ( value );
  var current_date = new Date;
  var cookie_year = current_date.getFullYear ( ) + 1;
  var cookie_month = current_date.getMonth ( );
  var cookie_day = current_date.getDate ( );
  var new_date = new Date(cookie_year, cookie_month, cookie_day);
  cookie_string += "; expires=" + new_date.toGMTString();
  document.cookie = cookie_string;
}

function delete_cookie ( cookie_name )
{
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}

function get_cookie ( cookie_name )
{
  var results = document.cookie.match ( '(^|;) ?' + cookie_name + '=([^;]*)(;|$)' );

  if ( results )
    return ( unescape ( results[2] ) );
  else
    return null;
}

function goBack() {
  if (confirm("┬√ єтхЁхэ√?")) {
    window.location.href="index.html";
  }
}

/*
  Валидация.
*/
function validate() {
  var author = document.getElementById("author_field");
  if (author.value == "") return false;
  var quote = document.getElementById("quote_field");
  if (quote.value == "") return false;
  return true;
}

/*
  Временный метод для переключения css.
*/
function changeCSS(id, newCssURL) {
  document.getElementById(id).href=newCssURL;
}