var request = null;
var prispevok = null; 
var bod = null; 
var typ = null;
  
var c=0;
var t1;
var t2;
  
function createRequest() {
  var request = null;
  try {
    request = new XMLHttpRequest();
  } catch (trymicrosoft) {
    try {
      request = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (othermicrosoft) {
      try {
        request = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (failed) {
        request = null;
      }
    }
  }

  if (request == null) {
    alert("Error creating request object!");
  } else {
    return request;
  }
}

request = createRequest();
 
function replaceText(el, text) {
  if (el != null) {
    clearText(el);
    var newNode = document.createTextNode(text);
    el.appendChild(newNode);
  }
}

function clearText(el) {
  if (el != null) {
    if (el.childNodes) {
      for (var i = 0; i < el.childNodes.length; i++) {
        var childNode = el.childNodes[i];
        el.removeChild(childNode);
      }
    }
  }
}



function ukaz(wht,whi,how) {
 var panel=escape(wht);
 for (i=1;i<=how;i=i+1)
  {
   if (i==whi) {
	  document.getElementById(panel+escape(i)).style.display ='block';
   }
   else {
	  document.getElementById(panel+escape(i)).style.display ='none';
   }

  }

}
function skry(wht,how) {
 var panel=escape(wht);
 
 for (i=1;i<=how;i=i+1) 
  {
	  document.getElementById(panel+escape(i)).style.display ='none';
  }

} 

function zmenmenu(wht,wht2,whi,how) {
	
 var panel=escape(wht);
 var menu=escape(wht2);
 
 for (i=1;i<=how;i=i+1) 
  {
   if (i==whi) {
	  document.getElementById(menu+escape(i)).className='selected';
	  document.getElementById(panel+escape(i)).style.display ='block';
   }
   else {
 	  document.getElementById(menu+escape(i)).className='nie';
    document.getElementById(panel+escape(i)).style.display ='none';
   }    

  }

}