function showBox(path)
  {
	var BoxHtml = "";
    BoxHtml += '<iframe src="'+path+'" frameborder="0" width="640" height="480" marginheight="0" marginwidth="0">';
	BoxHtml += '</iframe>\n';
	document.getElementById("box").innerHTML = BoxHtml;
	document.getElementById("box").style.display="block";
  }

function hideBox() 
  {
	top.document.getElementById("box").style.display="none";
  }
function ShowProjekt(id)
  {
	document.getElementById("obrazek"+id).style.display="block";
  }
function HideProjekt (id)
  {
  	document.getElementById("obrazek"+id).style.display="none";
  }