function switch_radio(formId) {
 var prepinaciPole = document.getElementById(formId);
 for(var i = 0; i< prepinaciPole.length; i++) {
  if(prepinaciPole[i].checked) {
   top.document.location.replace('?'+prepinaciPole[i].name+'='+prepinaciPole[i].value);
  }
 }
}

function switch_form(pole) {
 var stranka = document.getElementById(pole).options[document.getElementById(pole).selectedIndex].value;
 if (stranka > "")
  top.document.location.replace(stranka);
 return false;
}

function disableSumbitFormButton(pole, notice){
 document.getElementById(pole).disabled = true;
 document.getElementById(pole).value = notice;
 return true;
}

function toggle_element(el) {
  var myelement = document.getElementById(el);

  if( !myelement.style.display || myelement.style.display == "none" ) {
   myelement.style.display = "block"
  } else {
    myelement.style.display = "none";
  }
}
function toggleTable(el) {
  toggle_element(el);
}

// drive definovana funkce, ktera otevirala obrazku v novem okne
function Zvets() {

}


function voteByLabelClick(id) {
  var i, labels, form;
  // najdeme formular
  form = document.getElementById(id);
  // budeme pokracovat jedine, pokud jsme nasli formular
  if (form) {
    // formulari priradime tridu "voteByLabel", pres kterou je v CSS definovano skryti
    // radiobuttonu a obarveni labelu tak, aby vypadaly jako odkazy
    form.className += ' voteByLabelClick';
    // najdeme labely
    labels = form.getElementsByTagName('label');
    for (i = 0; i < labels.length; i++) {
      // kazdemu opet priradime na onclick funkci, ktera odesle formular
      labels[i].onclick = function () {
        if (form.onsubmit instanceof Function && false === form.onsubmit()) {
          return false;
        }
        // nastaveni radiu pro tuto volbu checked na true
        document.getElementById(this.htmlFor).checked = true;
        form.submit();
      }
    }
  }
}

/* nahrazeni URL v prednactenych IFRAME elementech skutecnymi adresami s reklamou */
function switchBannerLocation()
{
    
    var target;
    
    // leader banner 960x100
    if (target = document.getElementById('banner_content_top_center_iframe')) {
      window.frames.banner_content_top_center_iframe.location.replace('http://ads2.vpress.cz/show.php?z=13&amp;rand=1328385899');
    }
    
    // square banner 250x250
    if (target = document.getElementById('banner_right_top_left_iframe')) {
      window.frames.banner_right_top_left_iframe.location.replace('http://ads2.vpress.cz/show.php?z=17&amp;rand=1328385899');
    }
    
    // full banner 468x60
    if (target = document.getElementById('banner_content_center_center_iframe')) {
      window.frames.banner_content_center_center_iframe.location.replace('http://ads2.vpress.cz/show.php?z=1&amp;rand=1328385899');
      //target.setAttribute('src', 'http://ads2.vpress.cz/show.php?z=1&amp;rand='+Math.random());
      //window.frames.banner_content_center_center_iframe.location.href = 'http://www.seznam.cz';
      //window.frames.banner_content_center_center_iframe.location.reload(true);
      //alert(target.getAttribute("src")+"\nhttp://ads2.vpress.cz/show.php?z=1&amp;rand=1328385899");
    }
    
    // half banner 120x300
    if (target = document.getElementById('banner_right_top_right_iframe')) {
      window.frames.banner_right_top_right_iframe.location.replace('http://ads2.vpress.cz/show.php?z=15&amp;rand=1328385899');
    }
    
    // strip banner A 250x60
    if (target = document.getElementById('banner_content_strip_first_iframe')) {
      window.frames.banner_content_strip_first_iframe.location.replace('http://ads2.vpress.cz/show.php?z=18&amp;rand=1328385899');
    }
    // strip banner B 250x60
    if (target = document.getElementById('banner_content_strip_second_iframe')) {
      window.frames.banner_content_strip_second_iframe.location.replace('http://ads2.vpress.cz/show.php?z=19&amp;rand=1328385899');
    }
    // strip banner C 250x60
    if (target = document.getElementById('banner_content_strip_third_iframe')) {
      window.frames.banner_content_strip_third_iframe.location.replace('http://ads2.vpress.cz/show.php?z=16&amp;rand=1328385899');
    }
    // strip banner D 250x60
    if (target = document.getElementById('banner_content_strip_fourth_iframe')) {
      window.frames.banner_content_strip_fourth_iframe.location.replace('http://ads2.vpress.cz/show.php?z=16&amp;rand=1328385899');
    }
}

if (typeof scrollBanerEnabled == 'undefined') {
  scrollBanerEnabled = false;
}

YUI().use("node", function(Y) {
  Y.on("domready", function (e) {
    
    switchBannerLocation();
  
    var 
      scrollBanner,
      scrollBannerHeight,     // vyska rollovaneho banneru
      scrollBannerXDefault,   // defaultni X pozicovani rollovaneho banneru
      scrollBannerYDefault,   // defaultni Y pozicovani rollovaneho banneru
    
      content,                //
      contentX,               // X offset obsahoveho elementu
      contentY,               // Y offset obsahoveho elementu
      contentHeight,          //
    
      borderTop,              //
      borderBottom,           //
      scrollBanerTopOffset = 0, //
    
      offsetHeight,           //
      scrollPadding = 10,     //
      stylePositionDefault,   //
      stylePositionGlobal;    //
    
    
    var calculateScrollBan = function(e) {
      scrollBanner = Y.one("#banner_right_top_right");
      if(!scrollBanner) return false;

      scrollBannerHeight = Math.floor(scrollBanner.getComputedStyle('height').substr(0, scrollBanner.getComputedStyle('height').length-2));
      scrollBannerXDefault = scrollBanner.getStyle('left').substr(0, scrollBanner.getStyle('left').length-2);
      scrollBannerYDefault = scrollBanner.getStyle('top').substr(0, scrollBanner.getStyle('top').length-2); 
          
      content = Y.one("#content");
      contentX = Math.floor(content.getX()); 
      contentY = Math.floor(content.getY());
      contentHeight = Math.floor(content.getComputedStyle('height').substr(0, content.getComputedStyle('height').length-2));
          
      borderTop = contentY;
      borderBottom = contentY + contentHeight - scrollBannerHeight;
          
      offsetHeight = Y.one("#offsetHeight");
      if (offsetHeight) {
        scrollBanerTopOffset = Math.floor(offsetHeight.getComputedStyle('height').substr(0, offsetHeight.getComputedStyle('height').length-2));
      }
          
      borderTop += scrollBanerTopOffset;
            
      stylePositionDefault = scrollBanner.getStyle('position');
      stylePositionGlobal  = scrollBanner.getStyle('position');
      
      return true;
        
    };
    
    var scrollBan = function(e) {
      if(!scrollBanner && !calculateScrollBan(this)) return;
      
      var 
        scrollY = Y.DOM.docScrollY();                    // aktualni offset Y rolloveru od horniho okraje stranky
    
      var 
        scrollBannerX = scrollBanner.getX(),             // aktualni X offset rollovaneho banneru
        scrollBannerY = Math.floor(scrollBanner.getY()); // aktualni Y offset rollovaneho banneru
      
      var
        stylePositionNow,
        styleTopNow;
      
      
      if (scrollY>borderTop && scrollY<borderBottom) {
        // posunuto za hranici contentu, pozice fixed 
        //console.log("fixed");
        stylePositionNow = "fixed";
        styleTopNow = scrollPadding;
      }
      if (scrollY>borderBottom || scrollY<borderTop) {
        // console.log(stylePositionDefault);
        stylePositionNow = stylePositionDefault;
        styleTopNow = scrollBannerYDefault;
      }
      if (scrollY>borderBottom) {
        styleTopNow = borderBottom-scrollBannerHeight-scrollBanerTopOffset;
      }

      
      //console.log(stylePositionNow+' - '+stylePositionGlobal);
      
      if (stylePositionNow!=stylePositionGlobal) {
        //console.log("zmena "+stylePositionNow+" "+styleTopNow);
        stylePositionGlobal = stylePositionNow;
        scrollBanner.setStyle('position', stylePositionNow);
        scrollBanner.setStyle('top', styleTopNow+"px");
      }
      
      //console.log(scrollBannerY+" x "+contentY+" "+contentHeight+" "+borderBottom)
    
    };
    
    
    if (scrollBanerEnabled === true) {
      calculateScrollBan(this);
      scrollBan(this);  
        
      Y.on('scroll', scrollBan);
    }
    
  });
  
  
  
});