// hlavní menu

// image preloader
image1 = new Image();
image1.src = '/images/btn_uvod_over.jpg';

image2 = new Image();
image2.src = '/images/btn_jahody_over.jpg';

image3 = new Image();
image3.src = '/images/btn_jablka_over.jpg';

image4 = new Image();
image4.src = '/images/btn_ostatni_over.jpg';

image5 = new Image();
image5.src = '/images/btn_cenik_over.jpg';

image6 = new Image();
image6.src = '/images/btn_onas_over.jpg';

image7 = new Image();
image7.src = '/images/btn_kontakt_over.jpg';

image8 = new Image();
image8.src = '/images/btn_arrowBig_over.jpg';

image9 = new Image();
image9.src = '/images/btn_viceTisk_over.jpg';

image10 = new Image();
image10.src = '/images/btn_odrudy_over.jpg';

image11 = new Image();
image11.src = '/images/btn_recepty_over.jpg';

image12 = new Image();
image12.src = '/images/btn_fotografie_over.jpg';

//change function
function changeimg(filename, imagename){
  	document.images[imagename].src = filename;
}

//check forms
function checkfrmrec(){ 
    var frmTerm = document.getElementById('frmRecipient');
    var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
        if(frmTerm.recemail.value.match(emailExp)){
                frmTerm.recemail.style.borderColor = '#556700';
                document.forms.frmRecipient.submit();
                return true;
        }else{
                frmTerm.recemail.style.borderColor = '#FF0000';
                frmTerm.recemail.focus();
                alert('Vyplňte Váš email.');
                return false;
        }
}

function checkfrmkontakt(){ 
    var frmTerm = document.getElementById('frmKontakt');
    var numericExpression = /^[0-9]+$/;
    var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
        if(frmTerm.senderKontakt.value.match(emailExp) || frmTerm.senderKontakt.value.match(numericExpression)){
                frmTerm.senderKontakt.style.borderColor = '#556700';
                document.forms.frmKontakt.submit();
                return true;
        }else{
                frmTerm.senderKontakt.style.borderColor = '#FF0000';
                frmTerm.senderKontakt.focus();
                alert('Vyplňte Váš email nebo telefonní číslo.');
                return false;
        }
}

//fotogalery
function showGalery()
    {
        var objGal = document.getElementById('detail_photo');
        if (objGal.className=='detail_photo_show'){
            objGal.className='detail_photo_hide';    
        }else{
            objGal.className='detail_photo_show';    
        }
        
    }