function chdop (val) {
  var platdop = new Array();
  platdop[1] = new Array();
  platdop[1][1] = 1;
  platdop[3] = new Array();
  platdop[3][3] = 1;
	tmp = platdop[val];
	for (i = 1; i <= 4; i++) {
		if (document.getElementById("payment"+i)) {
			if (tmp [i]) {
				document.getElementById("payment"+i).disabled = "";
			} else {
				document.getElementById("payment"+i).disabled = "disabled";
				document.getElementById("payment"+i).checked = "";
			}
		}
	}
	if (val == 3) {
    document.getElementById("payment3").checked = "checked"
  } else {
    document.getElementById("payment3").checked = ""
  }
  if (val == 1) {
    document.getElementById("payment1").checked = "checked"
  } else {
    document.getElementById("payment1").checked = ""
  }
}

function cm(m) {
	for(i=1; i<4; i++) {
		mark=document.getElementById("mark"+i);
		if(mark != null) {mark.className = (m == i) ? "active" : "";}
		
		fold=document.getElementById("fold"+i);
		//aktivni zalozka
		if(fold != null) {fold.className = (m == i) ? "fold" : "nodisplay";}
	}
	
	return false;
}