// JavaScript Document
var IE = document.all?true:false;

function showMessage(msg) 
{
  if(!document.getElementById('SystemMessage'))
    insertMsgWindow();
    
  if(IE)
  {
    var poz_y = (document.documentElement.scrollTop + 150) + 'px';
  }
  else 
  {
    var poz_y = (window.pageYOffset + 150) +'px';
  }
 
  var poz_x = ((document.body.clientWidth/2)-190) +'px';
  document.getElementById("SystemMessage").style.left = poz_x;
  document.getElementById("SystemMessage").style.top = poz_y;
  document.getElementById('SystemMessage').style.display = "block";
  document.getElementById('SystemMessageTxt').innerHTML = msg;
  
  document.getElementById('SystemMessage').czas = setTimeout('hideDivTime(\'SystemMessage\', 0)', 10000);

}

function HideMessage() 
{
  document.getElementById('SystemMessage').style.display = "none";
}

function hideDivTime(d, t) 
{
  var div = document.getElementById(d);

  div.style.display = "none";

  if (t==0)
    clearTimeout(div.czas);
  else
    div.czas = setTimeout('showHideDivTime("'+d+'", 0)', t);
}

function insertMsgWindow()
{
//  var windowBox='<div id="SystemMessage"><div id="SystemMessageTxt"></div><div id="SystemMessageClose"><a href="javascript:HideMessage()">zamknij</a></div></div>';
  
  var body=document.body;
  var div=document.createElement('div');
  div.id='SystemMessage';
  body.appendChild(div);
  var smt=document.createElement('div');
  smt.id='SystemMessageTxt';
  div.appendChild(smt);
  var smc=document.createElement('div');
  smc.id='SystemMessageClose';
  div.appendChild(smc);
  var close=document.createElement('a');
  close.href='javascript:HideMessage()';
  close.innerHTML='zamknij';
  smc.appendChild(close);
  
//  document.getElementsByTagName('body')[0].innerHTML+=windowBox;
}