/*
	Check if the browser if is supported. If it is, return true.
	If it is not, display a warning/confirmation popup and
	return the result (ie. true on OK, false on Cancel).
*/
function browserCheck() {
	if (is_ie4up
		|| is_nav3
		|| (is_nav4 && is_minor >= 4.7)
		|| is_nav7up
		|| is_aol7
		|| is_aol8)
			return true;
			
	return window.confirm(
		'The browser version detected is not supported and you may'
		+ ' encounter errors as a result.\n\n'
		+ 'The following browsers are supported for use'
		+ ' with this application:\n\n'
		+ '    Internet Explorer 4.0 and above;\n'
		+ '    Netscape 3.0;\n'
		+ '    Netscape 4.7 to 4.8;\n'
		+ '    Netscape 7.0 and above;\n'
		+ '    AOL 7.0;\n'
		+ '    AOL 8.0.\n\n'
		+ 'Click OK to continue going to the application'
		+ ' or Cancel to remain on this page.');
}