function validate()
{
	formObj = document.formular;
	if ((formObj.meno.value == "") ||
		(formObj.telefon.value  == "") ||
		(formObj.mail.value  == "") ||
		(formObj.sprava.value  == "")||
		(formObj.security_code.value  == ""))
	{
		alert("Musíte vyplniť všetky povinné polia.");
		return false;
	}
	else
	{
	 var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	   var address = formObj.mail.value;
	   if(reg.test(address) == false) {
		  alert('Chybný formát Vašej e-mailovej adresy.');
		  return false;
	   }
	   else
	   {
		   return true;
	   }
	}
}

$(window).load(function() {
    $('.big_referencia_img').nivoSlider({
        effect:'fold', //Specify sets like: 'fold,fade,sliceDown'
        animSpeed:500, //Slide transition speed
        pauseTime:3500,
        startSlide:0, //Set starting Slide (0 index)
        directionNav:false, //Next & Prev
        directionNavHide:true, //Only show on hover
        controlNav:false, //1,2,3...
        controlNavThumbs:false, //Use thumbnails for Control Nav
        keyboardNav:false, //Use left & right arrows
        pauseOnHover:false, //Stop animation while hovering
        manualAdvance:false, //Force manual transitions
        captionOpacity:0.8 //Universal caption opacity
    });
});