function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel"))
	{
      if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) 
	  {
        a.disabled = true;
        if(a.getAttribute("title") == title) a.disabled = false;
      }
	}
  }
     var ablauf = new Date();
      var zweimonate = ablauf.getTime() + (60 * 24 * 60 * 60 * 1000);
      ablauf.setTime( zweimonate );
      document.cookie = "isa_fontsize="+title+"; expires=" + ablauf.toGMTString() +';  path=/';
}

    function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
   }