var dom = true;
if (!document.getElementById) dom = false;
if (!document.getElementById && document.all) {document.getElementById = document.all; dom = true;}

function objekt(what) {return document.getElementById(what);}

if (dom) {
	switch (objekt("rbt").value) {
		case "1": objekt("robotsid").value = "Praha"; break;
		case "2": objekt("robotsid").value = "Sněžka"; break;
		case "3": objekt("robotsid").value = "noc"; break;
		case "4": objekt("robotsid").value = "den"; break;
	}
	
	objekt("robots-1").style.display = "none";
	objekt("robots-2").style.display = "none";
}