// Adjustable font sizes
var i = 2;
var sizes = new Array("30%","40%","50%","60%","70%","80%","90%");
var size = sizes[i];
function f(n) {
	if (n == "up") {
		if (i < 6 ) { 
			i += 1;
			size = sizes[i];
//		alert("i= "	+ i + "\nsize = " + size);
		}
		else { return null;}
	}
	else if (n == "down") {
		if (i > 0) {
			i -= 1;
			size = sizes[i];
		}
		else { return null;}
	}
	else {
//		alert("savedsize= "+n)
		size = n;
		for (j=0; j < sizes.length; j++) {
			if (n == sizes[j]) { i = j; }
		}
	}
//	alert("font-size = " + size);
	if (document.getElementByTagName) {
		document.getElementByTagName("body").item(0).style.fontSize = size;
	}
	else {
		document.body.style.fontSize = size;
	}
}
//Cookie to retain the setting.
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 {
		var expires = "";
	}
	document.cookie = name + "=" + value + expires + ";path=/;";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for (j=0; j < ca.length; j++) {
		var c = ca[j];
		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 = readCookie("fsize");
	var savedsize = cookie ? cookie : size;
//	alert("Cookie: savedsize = "+savedsize);
	f(savedsize);
}
		
window.onunload = function(e) {
	var fsize = size;
	createCookie("fsize",fsize,365);
}