if (document.all) {navigator.family = "ie4"}
if (window.navigator.userAgent.toLowerCase().match(/gecko/)) {navigator.family = "gecko"}
if (window.navigator.userAgent.toLowerCase().indexOf('opera') != -1) {navigator.family = 'opera';}

function ChangesTree(zalozka)
{
if (zalozka==1)
	{
	document.getElementById('zal1').className = "zalozka1";
	document.getElementById('zal2').className = "zalozka2";
	document.getElementById('strom1').className = "";
	document.getElementById('strom2').className = "invisible";
	}
if (zalozka==2)
	{
	document.getElementById('zal1').className = "zalozka11";
	document.getElementById('zal2').className = "zalozka22";
	document.getElementById('strom1').className = "invisible";
	document.getElementById('strom2').className = "";
}
}