[Javascript] Help with this code

[Sal Perconte]

Hi,
can anyone tell me what language
the code inside the square brackets
belongs too the [if IE]
I know what it means, but it's outside
the script tags?

</script>
	<!--[if IE]>
	<style type="text/css" media="all">
	#navbar li ul {
		position: absolute;
		right: 149px;
		top: 0;
		display: none;
		z-index: 10;
	}
	</style>
	<![endif]-->

Thanks,
Sal