checkBrowserWidth();
attachEventListener(window, "resize", checkBrowserWidth, false);

function checkBrowserWidth() {
	var theWidth = getBrowserWidth();
	if (theWidth == 0) {
		var resolutionCookie = document.cookie.match(/(^|;)tmib_res_layout[^;]*(;|$)/);
		if (resolutionCookie != null) {
			setStylesheet(unescape(resolutionCookie[0].split("=")[1]));
		}
		addLoadListener(checkBrowserWidth);
		return false;
	}
	if (theWidth <= 800) {
		setStylesheet("800");
		document.cookie = "tmib_res_layout=" + escape("800");
		
		if (theWidth <= 640) {
			setStylesheet("640");
			document.cookie = "tmib_res_layout=" + escape("640");
			
			if (theWidth <= 480) {
				setStylesheet("480");
				document.cookie = "tmib_res_layout=" + escape("480");
			}
		}
	}
	else {
		setStylesheet("");
		document.cookie = "tmib_res_layout=";
	}
	return true;
};

function getBrowserWidth() {
	if (window.innerWidth) {
		return window.innerWidth;
	}
	else if (document.documentElement && document.documentElement.clientWidth != 0)	{
		return document.documentElement.clientWidth;
	}
	else if (document.body)	{
		return document.body.clientWidth;
	}
	return 0;
};

function setStylesheet(styleTitle) {
	var currTag;
	if (document.getElementsByTagName) {
		for (var i = 0; (currTag = document.getElementsByTagName("link")[i]); i++) {
			if (currTag.getAttribute("rel").indexOf("style") != -1 && currTag.getAttribute("title")) {
				currTag.disabled = true;
				if(currTag.getAttribute("title") == styleTitle)	{
					currTag.disabled = false;
				}
			}
		}
	}
	return true;
};