var okno;	
	function openWin(url)
	{
		var tit = "Rozvrh_PF_JCU";
		okno = window.open(url,tit,"scrollbars=yes,menubar=no,height=600,width=1000,top=0,left=0,resizable=yes,toolbar=no,location=no,status=no");
		//okno.focus();
	}
	
	function navigace()
	{
		var ele=document.getElementById('form_nav');
		if (!ele) return;
		ele.submit();
	}