function contentboxwidthupdate() {
	var winW = 630, winH = 460;

	if (parseInt(navigator.appVersion)>3) {
		if (navigator.appName=="Netscape") {
			winW = window.innerWidth;
		}
		if (navigator.appName.indexOf("Microsoft")!=-1) {
			winW = document.body.offsetWidth;
		}
	}

	if (winW>950) {
		document.getElementById('contentboxempty').className="contentboxemptyshow";
		document.getElementById('contentboxcont').className="contentboxcontshow";
	}
	else {
		document.getElementById('contentboxempty').className="contentboxemptyhide";
		document.getElementById('contentboxcont').className="contentboxconthide";
	}
}
window.onresize= contentboxwidthupdate;

contentboxwidthupdate();