function panel(x)
  {
  if (x=='aktuality') document.getElementById('novinky').style.display='none';
  if (x=='novinky') document.getElementById('aktuality').style.display='none';
  document.getElementById(x).style.display='block';
  }

function op(url,x,y)
  {
  var msirka = x;
  var mstredx = (screen.availWidth - msirka) / 2;
  var mvyska = y;
  var mstredy = (screen.availHeight - mvyska -100) / 2;
  var mparams = ('width='+ msirka +',height='+ mvyska +',left=' + mstredx +',top=' + mstredy +',resizable=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,toolbar=0');
  newokno=window.open(url,'_blank',mparams);
  newokno.document.close();
  newokno.focus();
  }

function fs(velikost)
  {
  document.getElementById('obsh').className='om'+velikost;
  document.getElementById('fs1').src='/images/icons/font1.gif';
  document.getElementById('fs2').src='/images/icons/font2.gif';
  document.getElementById('fs3').src='/images/icons/font3.gif';
  document.getElementById('fs'+velikost).src='/images/icons/font'+velikost+'a.gif';

  createCookie('fxfont',"om"+velikost,30);
  }


function createCookie(c_name,value,expiredays)
  {
  var exdate=new Date();
  exdate.setDate(exdate.getDate()+expiredays);
  document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString())+"; path=/";
  }



function showakt(okno,evt) 
  { 
  var rX=0;
  var rY=0;
  var e = (window.event) ? window.event : evt; 
  if (e.pageX || e.pageY) {rX=e.pageX;rY=e.pageY;}
  else if (e.clientX || e.clientY)
    {
	rX = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
	rY = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
	}
  
  rX=rX-document.getElementById("cemix").offsetLeft;
  rY=rY-document.getElementById("cemix").offsetTop-85;
  document.getElementById(okno).style.left = Math.floor(rX-document.getElementById(okno).offsetWidth/2) + "px";
  document.getElementById(okno).style.top = Math.floor(rY-document.getElementById(okno).offsetHeight/2) + "px";
  document.getElementById(okno).style.visibility = "visible";
  } 

function hdzmena(ski)
  {
  var chc=document.getElementById('sk'+ski).checked;
  var j=0;
  while(document.getElementById('sk'+ski+'-'+j))
    {
	document.getElementById('sk'+ski+'-'+j).checked=chc;
	j++;
	}
  }


var tup;
var tdown;

function menuup()
  {
  if (tdown) clearTimeout(tdown);
  var p1=document.getElementById('mask');
  p1.scrollTop += 10;
  if (p1.scrollTop>p1.scrollHeight)
    {
	p1.scrollTop=p1.scrollHeight;
	clearTimeout(tup);
	}
  else
    {
	tup=setTimeout("menuup()",100); 
	}
  }

function menudown()
  {
  if (tup) clearTimeout(tup);
  var p1=document.getElementById('mask');
  p1.scrollTop -= 10;
  if (p1.scrollTop<0)
    {
	p1.scrollTop=0;
	clearTimeout(tdown);
	}
  else
    {
	tdown=setTimeout("menudown()",100); 
	}
  }

function menux()
  {
  if (document.getElementById('mainmenu'))
    {
    if (document.getElementById('mainmenu').offsetHeight>454)
      {
	  var maxv=430 - document.getElementById('mainmenu').offsetHeight + document.getElementById('pol').offsetHeight;
      document.getElementById('mask').style.height=maxv+"px";
	  document.getElementById('mnav').innerHTML='<A href="#" onClick="menudown()"><IMG src="/images/back/s1.gif" alt="Nahoru" title="Nahoru"></A><A href="#" onClick="menuup()"><IMG src="/images/back/s2.gif" alt="Dolu" title="Dolu"></A>';
	  document.getElementById('mnav').style.display='block';
	  }
	}
  }

window.onload = menux;