function checkBrowser() {
	var bName = navigator.appName;
	var bVer = parseInt(navigator.appVersion);
	if(bName == "Microsoft Internet Explorer" && bVer <= "3") {
		if(document.getElementById) {
			var myStr = "bWarn";
			var myObj = document.getElementById(myStr);
			myObj.style.display = "block";
		}
		else if(document.layers) {
			document.bWarn.display = "block";
		}
		else {
			document.all.bWarn.style.display = "block";
		}
	}
}