function elementSetDisplay(div_name, stav)
		{
			document.getElementById(div_name).style.display = stav;
		}
		
		function showSubMenu(item)
		{
			if (document.getElementById(item) && document.getElementById('sub_'+item).style.display == 'none')
				document.getElementById('sub_'+item).style.display = 'block';
			else
				document.getElementById('sub_'+item).style.display = 'none';
		}
		
		function imgShow(path,alt)
		{ 
			document.write('<img src="/images/'+path+'" alt="'+alt+'" />');
		}