var defaultFontSize =  100;
var minimumFontSize =  80;
var maximumFontSize = 120;

var defaultStyle = "Fixed";

$debug_this_script = false;

var prefsLoaded = false;
var currentFontSize = defaultFontSize;

function toggleFluid() {
	var switchTo = (currentStyle == "Fixed") ? "wide" : "Fixed";
	document.body.className = switchTo;
}

function setWidth(width) {
	if(width != "wide") {
		document.body.className = '';
		currentStyle = "Fixed";
	} else {
		document.body.className = 'wide';
		currentStyle = "wide";
	}
}

function revertStyles() {
	currentFontSize = defaultFontSize;
	changeFontSize(0);
}

function changeFontSize(sizeDifference) {
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 10);
	if(currentFontSize > maximumFontSize) {
		currentFontSize = maximumFontSize;
	} else if(currentFontSize < minimumFontSize) {
		currentFontSize = minimumFontSize;
	}
	setFontSize(currentFontSize);
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
	createCookie("fontSize", currentFontSize, 365);
}

function setFontSize(fontSize) {
	if($debug_this_script) {
		alert ('fontsize is being set: ' + fontSize);
	}
	var stObj = (document.getElementById) ? document.getElementById('content_area') : document.all('content_area');
	document.body.style.fontSize = fontSize + '%';
}

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;
		}
	}
}

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 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;
}

function js_init() {
	if($debug_this_script) {
		alert('window.onload firing');
	}
	cookie = readCookie("pageWidth");
	currentStyle = cookie ? cookie : "Fixed";
	setWidth(currentStyle);
	var cookie = readCookie("style");
	var title = (cookie) ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
	cookie = readCookie("fontSize");
	currentFontSize = (cookie) ? cookie : defaultFontSize;
	setFontSize(currentFontSize);
	if($debug_this_script) {
		alert('window.onload is exiting');
	}
}