function IsInternetExplorer()
{
	return (navigator.appName == 'Microsoft Internet Explorer');
}

function IsIE5()
{
	return (navigator.appVersion.indexOf("MSIE 5.")!=-1)
}

function IsOpera()
{
	return (navigator.appName == 'Opera');
}

function IsMozilla()
{
	return (navigator.appName == 'Mozilla');
}

function IsNetscape()
{
	return (navigator.appName == 'Netscape');
}