function checkBrowser()
{
	if ((navigator.appName.indexOf("Explorer") != -1 && navigator.userAgent.indexOf("MSIE 3") != -1)
		|| (navigator.appName.indexOf("Netscape") != -1 && navigator.userAgent.indexOf("zilla/3") != -1 )
		|| (navigator.appName.indexOf("Netscape") != -1 && navigator.userAgent.indexOf("zilla/5") != -1 )
	   )
	{
		document.open();
		document.write("This browser version is not supported.");
		document.close();
	}
	else if (!navigator.javaEnabled())
	{
		document.open();
		document.writeln("Java is not enabled in your browser.  Java must be enabled to allow this application to function properly.");
		document.close();
	}
}