function fontsizeup() {
	active = getActiveStyleSheet();
	switch (active) {
		case 'A+' : 
			setActiveStyleSheet('A++');
			break;
		case 'A++' : 
			setActiveStyleSheet('A++');
			break;
		default :
			setActiveStyleSheet('A+');
			break;
	}
	return false;
}

function fontsizedown() {
	active = getActiveStyleSheet();
	switch (active) {
		case 'A++' : 
			setActiveStyleSheet('A+');
			break;
		case 'A+' : 
			setActiveStyleSheet('A');
			break;
		default :
			setActiveStyleSheet('A');
			break;
	}
	return false;
}

function setActiveStyleSheet(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.disabled = true;
			if(a.getAttribute("title") == title) a.disabled = false;
		}
	}
	createCookie("stile", title, 365);
}

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

function getPreferredStyleSheet() {
	return ('A');
}

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;
}


/**
 * Initializing stylesheets, image rotator and ticker 
 */
$(document).ready(function(e){
	var cookie = readCookie("stile");
	var title = (cookie != null) ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
});