var fDesc=new Array();
fDesc[0] = "professional Look at Net is a simple application that is designed to teach you the basics of computer networks at the low level; at the level of Ethernet frames and IP (Internet Protocol) packets, by capturing network traffic, decoding encapsulated in the IP packets of a higher level protocols: TCP, UDP, and ICMP. It also focus on the basics of network security; the search for remote computers open to attack ports, etc.";

function tShowHide(id, show)
{
	var s = document.getElementById("desc");

	if ((s.innerHTML.length<=212 || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
		if (document.getElementById('m1'))
			document.getElementById('m1').style.display='none';
		if (document.getElementById('m2'))
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		if (document.getElementById('more_txt'))
			document.getElementById('more_txt').style.display='inline';
	}
	else
	{
		s.innerHTML = '';
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}