function changeImg(nr)
{
	document.getElementById('img1').src= poza[nr];
	document.getElementById('txtpoza').innerHTML = '<p>'+texte[nr]+'</p>';
}
function showExplic()
{
	document.getElementById('txtpoza').style.visibility = 'visible';
}
function hideExplic()
{
	document.getElementById('txtpoza').style.visibility = 'hidden';
}