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

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

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

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

image5 = new Image();
image5.src = '/css/images/btn_arrowPrace_over.gif';

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

image7 = new Image();
image7.src = '/css/images/btn_content_over.png';

image8 = new Image();
image8.src = '/css/images/btn_left_over.png';

image9 = new Image();
image9.src = '/css/images/btn_right_over.png';

image10 = new Image();
image10.src = '/css/images/btn_kontaktujte_over.gif';

//check forms
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.s_contact.value.match(emailExp) || frmTerm.s_contact.value.match(numericExpression)){
                frmTerm.s_contact.style.borderColor = '#556700';
                document.forms.frmKontakt.submit();
                return true;
        }else{
                frmTerm.s_contact.style.borderColor = '#FF0000';
                frmTerm.s_contact.focus();
                alert('Vyplňte Váš email nebo telefonní číslo,\nabychom Vám mohli doručit odpověď.');
                return false;
        }
}

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

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

function googleTranslateElementInit() {
        new google.translate.TranslateElement({
                pageLanguage: 'cs'
                }, 'google_translate_element');
}