var timer, i, imgId;

var dom = document.getElementById ? true : false;
var ns4 = document.layers ? true : false;
var dhtml = dom ? true : ie4 ? true : ns4 ? true : false;

var imglabelbase = 'changeBox';

// fce bez timeru a bez smycky

function showBox(id,box)
{
  if (dhtml)
  {
    clearTimeout(timer);
    for (i = 1; i <= 4; i++) {
	    imgId = imglabelbase + i + '-' + box;
			setVisibility(imgId,'hidden');
		}    
	imgId = imglabelbase + id + '-' + box;
	setVisibility(imgId,'visible');
  }
}

function hideBox(id,box)
{
  if (dhtml)
  {
    imgId = imglabelbase + id + '-' + box;
    setVisibility(imgId,'hidden');
    timer = setTimeout("setVisibility(imgId,'hidden')", 500);
  }
}
function hideAll(box)
{
  if (dhtml)
  {
    for (i = 1; i <= 4; i++) {
	    imgId = imglabelbase + i + '-' + box;
			setVisibility(imgId,'hidden');
		}    
  }
}


// puvodni fce s timerem a skovavaci smyckou
/*
function showBox(id,box)
{
  if (dhtml)
  {
    clearTimeout(timer);
    for (i = 1; i <= 3; i++) {
	    imgId = imglabelbase + i + '-' + box;
		if (i != id) {
			setVisibility(imgId,'hidden');
		} else {
    		setVisibility(imgId,'visible');
    	}
    }
  }
}

function hideBox(id,box)
{
  if (dhtml)
  {
    imgId = imglabelbase + id + '-' + box;
    timer = setTimeout("setVisibility(imgId,'hidden')", 500);
  }
}

*/