function switchTitlebox(boxid){
  var box = document.getElementById(boxid);
  if(box.style.visibility == "visible")
    box.style.visibility = "hidden"
      else
        box.style.visibility = "visible";
}

function c(formobject){
  formobject.value="";
}

function checkCaptchaValidity(){
  var object = document.getElementById("captcha");
  var object2 = document.getElementById("captchal");
  var check = new Date();
    if(object.value == check.getFullYear()){
    object.style.borderColor="#006600";
    object.style.backgroundColor="#99FF66";
    object2.innerHTML="<small>Kontrola na SPAM v pořádku!</small>";
  }
  else{
    object.style.borderColor="#990000";
    object.style.backgroundColor="#FF99FF";
    object2.innerHTML="<small>Zatím špatně! Zadej rok ve formátu YYYY!</small>";
  }
}

function setEmoticon(smile){
var commentobj = document.getElementById('commentarea');
commentobj.value = commentobj.value + smile;
commentobj.focus();
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}


function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}