/* JavaScript Document */

/* textsize.css */



var textSizeArray = new Array('normal','large','largest');
var textSizeIndex = 1;

function nextTextSize() {
	setNextStyleSheet();
		
}
function setNextStyleSheet() { 
	if (textSizeIndex+1>(textSizeArray.length-1)) {
		textSizeIndex = 0;
	} else {
		++textSizeIndex;
	}
	setActiveStyleSheet(textSizeArray[textSizeIndex]);
} 
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() { 
	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") 
		) return a.getAttribute("title"); 
	} 
	return null; 
} 

function setActiveStyleSheet(title) {
	var i, a, p, main; 
	var tmpObj;

	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;
			p = document.getElementById("size-"+title);
			switch (title) {
				case "normal": 
					document.getElementById("size-normal").src = "images/btn-size-normal-sel.gif";
					document.getElementById("size-large").src = "images/btn-size-large.gif";
					document.getElementById("size-largest").src = "images/btn-size-largest.gif";
					break;
				case "large": 
					tmpObj = document.getElementById("size-large");
					if (tmpObj != null)
					{
						document.getElementById("size-large").src = "images/btn-size-large-sel.gif";
						document.getElementById("size-normal").src = "images/btn-size-normal.gif";
						document.getElementById("size-largest").src = "images/btn-size-largest.gif";
					}
					break;
				case "largest": 
					tmpObj = document.getElementById("size-largest");
					if (tmpObj != null)
					{
						document.getElementById("size-largest").src = "images/btn-size-largest-sel.gif";
						document.getElementById("size-normal").src = "images/btn-size-normal.gif";
						document.getElementById("size-large").src = "images/btn-size-large.gif";
					}
					break;
			}
		} 
	}
} 

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 = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);
}

window.onunload = function(e) {
var title = getActiveStyleSheet();
createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);