// JavaScript Document

function createXmlHttpRequestObject() {
	var xmlHttp;
	if (window.XMLHttpRequest) {
		try	{ xmlHttp = new XMLHttpRequest(); }
		catch (e) {	xmlHttp = false; } }
	else {
			if (window.ActiveXObject) {
				try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); }
				catch (e) {
					alert("This didn't work!");
					xmlHttp = false; } } }
	return xmlHttp; } 

var xmlHttp = new createXmlHttpRequestObject();

function changeTextSize(size) {
	var sizeChangeImage = document.getElementById("size_image_control");
	var linkedcss = document.getElementById("size_style");
	var textsize = linkedcss.href.substr(linkedcss.href.lastIndexOf("/"));
	var newsize = "/css/size/" + size + ".css";
	linkedcss.href = newsize;
	sizeChangeImage.src = "/image_assets/text_size_" + size + ".gif";
	if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)	{
		xmlHttp.open("GET", "/apps/styles/ajax.php?size=" + size, true);
		xmlHttp.send(null);
		return true; } }