function setcookie(name, value, days, path, domain, secure) { 
	var expires = -1;
	if(typeof days == "number" && days >= 0) {var d = new Date(); d.setTime(d.getTime()+(days*24*60*60*1000)); expires = d.toGMTString();		 } 
		 value = escape(value);document.cookie = name + "=" + value + ";" + (expires != -1 ? " expires=" + expires + ";" : "") + (path ? "path=" + path : "") + (domain ? "; domain=" + domain : "") + (secure ? "; secure" : ""); 
	 }
 function delcookie(name) { setcookie(name, "-", 0); }
 function getcookie(name) { var idx = document.cookie.indexOf(name+'='); if(idx == -1) { return null; } value = document.cookie.substring(idx+name.length+1); var end = value.indexOf(';'); if(end == -1) { end = value.length; } value = value.substring(0, end); value = unescape(value); return value; }

window.addEvent('domready',function(){
 //$(document.body).addClassName("js-on");
 if(getcookie('sk_font_size')){ setFontSize(getcookie('sk_font_size')); }
 });

 function setFontSize(fs){
	 var myVal = 1;
	 if (getcookie('sk_font_size')) {
	 myVal = parseFloat(getcookie('sk_font_size'));
	 } else {
	 myVal = 1;
	 }
	
	 if (fs == '+') {
	 	myVal = myVal + 0.25;
	 } else if (fs == '-') {
	 	myVal = myVal - 0.25;
	 } else if (fs == '0') {
	 	myVal = 1;
	 }
	
	 if (myVal <= 0.75) {
	 	$('tsmall').style.opacity="0.3";
	 } else {
	 	$('tsmall').style.opacity="1";
	 } if (myVal >= 2) {
	 	$('tbig').style.opacity="0.3";
	 } else {
	 	$('tbig').style.opacity="1";
	 }
	
	 if (myVal > 0.7 && myVal < 2.25) {
	 	document.body.style.fontSize = myVal + "em";
	 	setcookie('sk_font_size', myVal, 365, '/');
	 }
	 
 }