function ge(name) {
  return document.getElementById(name);
}

function getPageScroll(){

	var xScroll, yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
		xScroll = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
		xScroll = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
		xScroll = document.body.scrollLeft;	
	}

	arrayPageScroll = new Array(xScroll,yScroll) 
	return arrayPageScroll;
}
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	
//	console.log(self.innerWidth);
//	console.log(document.documentElement.clientWidth);

	if (self.innerHeight) {	// all except Explorer
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			windowWidth = self.innerWidth;
		}
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

//	console.log("xScroll " + xScroll)
//	console.log("windowWidth " + windowWidth)

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = xScroll;		
	} else {
		pageWidth = windowWidth;
	}
//	console.log("pageWidth " + pageWidth)

	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}

function loading(i) {  
  if(i == 0) {
    ge('shadow').style.display = 'none';
    ge('loading').style.display = 'none';    
  }else{    
    var arr = getPageSize();
    var arr2 = getPageScroll();

    ge('shadow').style.display = 'block';
    ge('shadow').style.height = arr[1]+'px';
    ge('loading').style.marginTop = (arr2[1]-100)+'px';
    ge('loading').style.display = 'block';    
  }
}

function enableField(obj) {
    //alert(obj.value);
    //var fieldset = document.getElementById('specifikace_div');
    //fieldset.innerHTML = '';
    vyber(obj.value);    
    vybrana_polozka = obj.value;
    //vybrana_polozka = obj.value;  
    var div = document.getElementById('cena_pneu_div');
    div.innerHTML = '';
}

function timetable(den, termin, termin_cislo, den_cislo){
  loading(1); // zapnuti loaderu
  var input_day = document.getElementById('timetable_datum');
  var input_term = document.getElementById('timetable_termin');
  var input_term_c = document.getElementById('timetable_termin_cislo');
  var input_day_c = document.getElementById('timetable_datum_cislo');
  
  var form_date = document.getElementById('formular');
  
  //alert(den+", "+termin+", "+termin_cislo+", "+den_cislo);
  input_day.value = den;
  input_term.value = termin;
  input_term_c.value = termin_cislo;
  input_day_c.value = den_cislo;
  form_date.submit();
  loading(0); // vypnuti loaderu
  return false;
}

function posun_tydne(tyden) {
  //alert (vybrana_polozka);
  loading(1); // zapnuti loaderu
  var myConn = new XHConn();
  myConn.connect("registrace.php", "GET", "ajax=1&shw="+tyden, zpracuj_posun_tydne);  
  return false;
}
function zpracuj_posun_tydne(oXML) {
  ge('ajax_calendar_result').innerHTML = oXML.responseText;
  loading(0); // vypnuti loaderu
}

function vyber(obj) {
  loading(1); // zapnuti loaderu
  var myConn = new XHConn();
  myConn.connect("ajax_vyber.php", "POST", "vyber="+obj, zpracuj2);
}

function zpracuj2(oXML) {
  var div = document.getElementById('specifikace_div');
  div.innerHTML = '';
  div.innerHTML = oXML.responseText;
  
  if(vybrana_polozka == 1 || vybrana_polozka == 2 || vybrana_polozka == 3 || vybrana_polozka == 4 || vybrana_polozka == 7 || vybrana_polozka == 8){
    vyberpneu3('neni');
    
  }
  if(vybrana_polozka == 5 || vybrana_polozka == 6){
    loading(0); // vypnuti loaderu
  }
}


function vyberpneu() {
  //alert(obj);
  rafek = document.getElementById('rafek_kol');
  //sirka = document.getElementById('sirka_pneu');
  //profil = document.getElementById('profil_pneu');
  loading(1); // vypnuti loaderu
  var myConn = new XHConn();
  //myConn.connect("ajax_cena_56.php", "POST", "rafek="+rafek.value+"&sirka="+sirka.value+"&profil="+profil.value, zpracuj3);
  myConn.connect("ajax_cena_56.php", "POST", "rafek="+rafek.value, zpracuj3);
}

function zpracuj3(oXML) {
  var div = document.getElementById('vyber_pneu_div');
  div.innerHTML = '';
  div.innerHTML = oXML.responseText;
  loading(0); // vypnuti loaderu
}

function vyberpneu2(obj) {
  //alert(obj.value);
  var rafek = obj.value;
  //alert(vybrana_polozka);
  loading(1); // vypnuti loaderu
  var myConn = new XHConn();
  myConn.connect("ajax_cena_1234.php", "POST", "vybrana_polozka="+vybrana_polozka+"&rafek="+rafek, zpracuj4);
}

function vyberpneu3(obj) {
  //alert(obj.value);
  id_pneu = obj.value; 
  //alert(vybrana_polozka);
  loading(1); // vypnuti loaderu
  var myConn = new XHConn();
  myConn.connect("ajax_cena_1234.php", "POST", "vybrana_polozka="+vybrana_polozka+"&id_pneu="+id_pneu, zpracuj4);
}

function zpracuj4(oXML) {
  var div = document.getElementById('cena_pneu_div');
  div.innerHTML = '';
  div.innerHTML = oXML.responseText;
  loading(0); // vypnuti loaderu
}

function typaut(obj) {
  //alert(obj.value);
  loading(1); // zapnuti loaderu
  var myConn = new XHConn();
  myConn.connect("select_car.php", "POST", "val="+obj.value, zpracuj);
}

function zpracuj(oXML) {
  var div = document.getElementById('typ_auta');
  div.innerHTML = '';
  div.innerHTML = oXML.responseText;
  loading(0); // vypnuti loaderu
}