if (window.addEventListener) {
	window.addEventListener('load', checkForNetscape7, false);
}
function checkForNetscape7() {
	if (navigator.userAgent.indexOf('Netscape/7') > -1) {
		var ns7warningText = "Known bugs in the Netscape 7 browser may render some pages in this site difficult or impossible to read. To ensure a pleasant browsing experience here and elsewhere, we recommend <a href=\"http://browser.netscape.com/\">upgrading your browser</a> to the latest version.";
		var warningDiv = document.createElement('div');
		warningDiv.id = 'netscape7-warning';
		warningDiv.innerHTML = ns7warningText;
		document.body.insertBefore(warningDiv, document.body.firstChild);
	}
}