function setColorScheme(cs) {
	var i, j, a, b;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if (a.getAttribute("rel") == "alternate stylesheet") {
			a.disabled = true;
			if (cs=="Alt") a.disabled = false;
		}
	}
	
	if (cs=="Alt") for (imgID in bilder) document.getElementById(imgID).src = bilder[imgID].stdImgAlt.src;
	else for (imgID in bilder) document.getElementById(imgID).src = bilder[imgID].stdImgStd.src;
	
	actualStyle = cs;
}

function 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 expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

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


window.onload = function(e) {
	
	setLinkAttributes();
	
	var cs = readCookie("colorScheme");
	if (!cs) cs = "Std";
	setColorScheme(cs);
	
	fs = 0;
	var fsMod = readCookie("fontSize");
	if (!fsMod) fsMod = 0;
	setFontSize(fsMod);
}

window.onunload = function(e) {
	createCookie("colorScheme", actualStyle, 365);
	createCookie("fontSize", fs, 365);
}