/* ukaz obrazek */

function winH() {
   if (window.innerHeight)
      /* NN4 a kompatibilní prohlížeče */
      return window.innerHeight;
   else if
   (document.documentElement &&
   document.documentElement.clientHeight)
      /* MSIE6 v std. režimu - Opera a Mozilla
      již uspěly s window.innerHeight */
      return document.documentElement.clientHeight;
   else if
   (document.body && document.body.clientHeight)
      /* starší MSIE + MSIE6 v quirk režimu */
      return document.body.clientHeight;
   else
      return null;
}


function getScrollOffset()
{
	if(document.documentElement.scrollTop)
		return document.documentElement.scrollTop;
	if(window.pageYOffset)
		return window.pageYOffset;
	return document.body.scrollTop;
}

function ukaz_obrazek(src,width,height)
{
 	if(document.getElementById)
 	{
 		var obj = document.getElementById('detailImg');
 		if(obj)
 		{
 			obj.src = src;
 			obj.width = width;
 			obj.height = height;
		}
  	obj = document.getElementById('imgBlock');
  	if(obj)
  	{
   		obj.style.visibility = "visible";
   		obj.style.height = (winH())+'px';
   	}
   	obj = document.getElementById('imgBlock');
  	if(obj)
  	{
   		obj.style.top = getScrollOffset()+'px';
  	}
  	obj = document.getElementById('detailParametry');
  	if(obj)
  	{
   		obj.style.visibility = 'hidden';
   	}
   	obj = document.getElementById('movieFlash');
  	if(obj)
  	{
   		obj.style.visibility = 'hidden';
   	}
   	obj = document.getElementById('movieFlash2');
  	if(obj)
  	{
   		obj.style.visibility = 'hidden';
   	}
 	}
 return false;
}


function schovejObrazek()
{
	var obj = document.getElementById('detailImg');
 	if(obj)
 	{
 		obj.src = 'style/free.gif';
	}
	
	var obj = document.getElementById('imgBlock');
  if(obj)
  {
   	obj.style.visibility = "hidden";
  }
  
  obj = document.getElementById('detailParametry');
  if(obj)
  {
   	obj.style.visibility = 'visible';
  }
  
  obj = document.getElementById('movieFlash');
  if(obj)
  {
   	obj.style.visibility = 'visible';
  }
  
  obj = document.getElementById('movieFlash2');
  if(obj)
  {
   	obj.style.visibility = 'visible';
  }
	return false;
}