function showobj(obj){obj.style.visibility='visible'}

function hideobj(obj) {if(obj.videt!='jo'){obj.style.visibility='hidden'}}

//function tl_out() {
// hideobj(tl_start);
// hideobj(tl_koncerty);
// hideobj(tl_media);
// hideobj(tl_forum);
// hideobj(tl_kontakty);
// hideobj(tl_dalsi);
//}

function noSpam(user,domain) { 
 locationstring = "mailto:" + user + "@" + domain; 
 window.location = locationstring;
};

function winH(){
 if(window.innerHeight)
  return window.innerHeight;
 else if(document.documentElement &&   document.documentElement.clientHeight)
  return document.documentElement.clientHeight;
 else if(document.body && document.body.clientHeight)
  return document.body.clientHeight;
 else
  return null;
}

function zmenRolovani(){
 if(winH()<640){
  document.getElementById('hlavnidiv').style.height=''
 }else{
  document.getElementById('hlavnidiv').style.height='430px'
 }
}

var fotka;
window.onunload=function(){
 if(fotka)fotka.close();
};
function obrazek(obr,alt,hei,wid){
 if(fotka)fotka.close();
 fotka=window.open('','fotka','width='+wid+',height='+hei+',innerWidth='+wid+',innerHeight='+hei);
 fotka.document.write('<html><head><title>'+alt+'<'+'/title></'+'head><body style="margin:0px"><img src="'+obr+'" alt="click to close" onClick="window.close()" /></'+'body><'+'/html>');
 fotka.document.close();
 return false;
};


