var classesTextSize = new Array();
var classTextNorm;
var classTextVets;
var classTextNejv;

function prepareTextSize(size){
 var newClassNorm = classTextNorm;
 var newClassVets = classTextVets;
 var newClassNejv = classTextNejv;
 var date = new Date();
 date.setTime(date.getTime()+(30*24*60*60*1000));//cookie ukladame na 30 dni
     
 switch (size){
  case '2':
    newClassVets = newClassVets+' aktu';
    setCookie('textSize', '2', date, '/');
  break;
  case '3':
    newClassNejv = newClassNejv+' aktu';
    setCookie('textSize', '3', date, '/');
  break;
  default:
    newClassNorm = newClassNorm+' aktu';
    setCookie('textSize', '1', date, '/');
  break;
 }
 classesTextSize['norm']=newClassNorm;
 classesTextSize['vets']=newClassVets;
 classesTextSize['nejv']=newClassNejv;
}

function changeTextSizeBody(size){
 var fontSize;
 switch (size){
  case '2':
   fontSize = '.9em';
  break;
  case '3':
   fontSize = '1.1em';
  break;
  default:
   fontSize = '.75em';
  break;
 }
 document.body.style.fontSize = fontSize;
}

function changeTextSizeElements(){
 document.getElementById('prepNorm').className=classesTextSize['norm'];
 document.getElementById('prepVets').className=classesTextSize['vets'];
 document.getElementById('prepNejv').className=classesTextSize['nejv'];
}

function changeTextSize(size){
 prepareTextSize(size);
 changeTextSizeElements();
 changeTextSizeBody(size);
}

function init(){
  //inicializace velikosti textu - ale jen, pokud ma smysl
  if(document.getElementById('prepNorm')){
    classTextNorm = document.getElementById('prepNorm').className;
    classTextVets = document.getElementById('prepVets').className;
    classTextNejv = document.getElementById('prepNejv').className;
    changeTextSize(getCookie('textSize'));
  }

  //inicializace menu - ale jen, pokud ma smysl
  if(document.getElementById('menu'))
    initMenu();

  //inicializace selectu - ale jen, pokud to ma smysl
  if(document.getElementById('fltr_1'))
    initSelect();
   
}

function changeClass(ajdi,trida){
	var element = document.getElementById(ajdi);
	if(element){
		element.className = trida;
		return false
	} else return true;
}

window.onload = init;