function roll(img_name, img_src)
   {
   document[img_name].src = img_src;
   }
function redzamsx()
{

	if (document.getElementById('pirkt').style.display == "none")
	{
	document.getElementById('pirkt').style.display = "";
	}
	else
	{
	document.getElementById('pirkt').style.display = "none";
	}
}