function calendarAjax(link)
{
  ajax_loadContent('calendar', link);
  return false;
}

function changeQuestionImage(img)
{
  var obj = document.getElementById('questionImage');
  
  obj.src = img;	
}

function ShowOrHide(id)
{
  if (id != '')
  {
    var item = null;

    if (document.getElementById) {
      item = document.getElementById(id);
    } else if (document.all){
      item = document.all[id];
    } else if (document.layers){
      item = document.layers[id];
    }

    if (!item) { }
    else if (item.style) {
      if (item.style.display == "none"){ item.style.display = ""; }
      else { item.style.display = "none"; }
    }else{ item.visibility = "show"; }
  }
}

function ShowAllQuestions(show)
{
  var links = document.getElementsByTagName('div');

  for (var i = 0; i < links.length; i++) {
	  var anchor = links[i];
	  
	  if (anchor.getAttribute('id') != undefined ) {
		var id = 'otazky-a-odpovede-item';
		
	    var divId = anchor.getAttribute('id').substr(0, id.length);
	    
	    if (divId == id) {
	        if (!anchor) { }
	        else if (show == 0) { anchor.style.display = "none"; }
	        else if (anchor.style) {
	          if (anchor.style.display == "none"){ anchor.style.display = ""; }
	        }else{ anchor.visibility = "show"; }	    	
	    }
	  }
  }
}