// --------------------------------------
//  Javascript for Character Font Size 
// --------------------------------------


var defaultFontSize =  76;
var minimumFontSize =  60;
var maximumFontSize = 100;

$debug_this_script = false;

var prefsLoaded = false;
var currentFontSize = defaultFontSize;

	
function changeFontSize(sizeDifference){
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 5);

	if(currentFontSize > maximumFontSize){
		currentFontSize = maximumFontSize;
	}else if(currentFontSize < minimumFontSize){
		currentFontSize = minimumFontSize;
	}
	setFontSize(currentFontSize);
}

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 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) {
	if($debug_this_script){  alert('window.onload firing');}

		cookie = readCookie("fontSize");
		currentFontSize = (cookie) ? cookie : defaultFontSize;
		setFontSize(currentFontSize);

	if($debug_this_script){alert('window.onload is exiting');}
}




window.onunload = function(e) {
	if($debug_this_script){ alert('onunload is firing'); }

	createCookie("fontSize", currentFontSize, 365);

	if($debug_this_script){ alert('onunload is firing'); }
};