ÿþfunction createCookie(name,value,days) {

	if (days) {

		var date = new Date();

		date.setTime(date.getTime()+(days*24*60*60*1000));

		var expires = "; expires="+date.toGMTString();

	}

	else var expires = "";

	document.cookie = name+"="+value+expires+"; 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;

}



function eraseCookie(name) {

	createCookie(name,"",-1);

}



function showNavi() {



var param = readCookie('navi');



var ImgURL = document.getElementById("navibutton").src;





    if (param == "off") {

            document.getElementById("headnavi").style.display = "";

	    document.getElementById("navibutton").src = ImgURL.replace(/einblenden/g, "ausblenden");

	    document.getElementById("navitext").innerHTML = "Navigation ausblenden";

	    createCookie('navi','on',7)

	} 

	else if (param == "on") {

	    document.getElementById("headnavi").style.display = "none";

	    document.getElementById("navibutton").src = ImgURL.replace(/ausblenden/g, "einblenden");

	    document.getElementById("navitext").innerHTML = "Navigation einblenden";

	    createCookie('navi','off',7)

	}

}