var prom1;
function open_popup(adresa, nazev, sirka, vyska ){
	prom1 = window.open(adresa, nazev, 'toolbar=no, menubar=no, locaion=no, directories=no, scrollbars=yes, resizable=yes, status=no, width='+sirka+', height='+vyska+', top=100, left=150');
	if (prom1) return false;
}

var ie5 = document.all && !document.fireEvent && !window.opera;


function changePic(url,obj,text) {
	if (!ie5){
		var imgs = objekt('foto-mini').getElementsByTagName('a');

		for(i=0;i < imgs.length;i++) imgs[i].className = "";

		obj.className = "akt";
		objekt('velke_foto').src = url;
		objekt('velke_foto').title = text;
		objekt('velke_foto').alt = text;
		objekt('foto-popis').innerHTML=text;
		
		

		return false;
	}
}

function objekt(obj) {
	var object = document.getElementById(obj);
	return object;
}