function zvetsi(cesta,titul,alt,x,y,jazyk) {
	if (window.obraz) obraz=window.obraz.close();
	obraz=window.open("http://www.alfa-pol.cz/zvetsi_nav.php?nazev="+titul+"&cesta="+cesta+"&alt="+alt+"&jazyk="+jazyk, "obrazek", "width="+(x)+", height="+(y)+", menubar=no, directories=no, toolbar=no, location=no, status=no, scrollbars=no, resizable=yes");
}
function onWindowResize() {
	window.onresize = onWindowResize;
	var winH;
	if(!(winH = window.innerHeight)) {
	  if(!(winH = document.documentElement.clientHeight)) {
	    winH = document.body.clientHeight;
	  }
	}
	var top = 226;
	var upr = winH - top;
	if (upr > 556) upr = 556;
	stranka.style.height = upr;
	vpravo.style.height = upr;
}