function open_rza(){
		sirka=800;
		vyska=600;
		if (wndwH > 600){
			noveOkno = window.open("http://rza.rza.cz/files/hlavni.htm", "rza", "fullscreen=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,left="+((wndwW-sirka)/2)+",top="+((wndwH-vyska)/2)+",width="+sirka+",height="+vyska);
			}else{
			vyska=561;
			noveOkno = window.open("http://rza.rza.cz/files/hlavni.htm", "rza", "fullscreen=1,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0");
		}
	}

	function open_pnp(){
		if (window.open("http://pnp.rza.cz"))
			return false;
	}

	function open_rpic(){
		if (window.open("http://www.rpic-vip.cz"))
			return false;
	}

	function open_equal(){
		if (window.open("http://europa.eu.int/comm/employment_social/equal/index_en.html"))
			return false;
	}

	function upravitOMEZENI(){
		promenaSTATUS = true;
		if (!document.getElementById(polePRVKU[0]).checked){
			promenaSTATUS = false;
		}
		if (polePRVKU.length){
			for (pruchod=1;pruchod<(polePRVKU.length);pruchod++)
				document.getElementById(polePRVKU[pruchod]).disabled = promenaSTATUS;
		}
	}

	function chngME(prvek){
		showME('zzI'+prvek);
		showME('zzIo'+prvek);
		showME('zzIc'+prvek);
	}

	function prouzek(prvek,barva){
		document.getElementById("pr"+prvek).src = (barva>0)?"images/system/bg.hlavicka.prouzek."+barva+".jpg":"images/system/bg.hlavicka.prouzek.jpg";
	}