function setActiveStyleSheet(group, title) {
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && a.getAttribute("lang") == group) {
			a.disabled = true
			if(a.getAttribute("title") == title) {
				a.disabled = false;
			}
		}
	}
	// Loginframe mit ansprechen
	if(parent.frames.length == 1){
		
	}
}

function getActiveStyleSheet(group) {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled && a.getAttribute("lang") == group) return a.getAttribute("title");
  	}
	return null;
}

function getPreferredStyleSheet(group) {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	if(a.getAttribute("rel").indexOf("style") != -1
		&& a.getAttribute("rel").indexOf("alt") == -1
		&& a.getAttribute("title")
		&& a.getAttribute("lang") == group
	) return a.getAttribute("title");
  }
  return null;
}

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 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;
}

window.onload = function(e) {
	var cookie_1 = readCookie("size");
	var title_1 = cookie_1 ? cookie_1 : getPreferredStyleSheet("size");
	setActiveStyleSheet(title_1);
	
	var cookie_2 = readCookie("colormode");
	var title_2 = cookie_2 ? cookie_2 : getPreferredStyleSheet("colormode");
	setActiveStyleSheet(title_2);
}

window.onunload = function(e) {
	var title_1 = getActiveStyleSheet("size");
	createCookie("size", title_1, 365);
	
	var title_2 = getActiveStyleSheet("colormode");
	createCookie("colormode", title_2, 365);
}

var cookie_1 = readCookie("size");
var title_1 = cookie_1 ? cookie_1 : getPreferredStyleSheet("size");
setActiveStyleSheet('size', title_1);

var cookie_2 = readCookie("colormode");
var title_2 = cookie_2 ? cookie_2 : getPreferredStyleSheet("colormode");
setActiveStyleSheet('colormode', title_2);