function PMHi(id) {
	document.getElementById('pmi' + id).className = 'picture-aktivni';
}

function PMLo(id) {
	document.getElementById('pmi' + id).className = 'picture';
}

function ZmenitObrazek(obrazek) {
	var cilovyImg = document.getElementById('obrazek_hlavni');
	cilovyImg.style.visibility = 'hidden';
	cilovyImg.src = './img-upload/' + obrazek;
	cilovyImg.onload = ZobrazitObrazek;
}

function ZobrazitObrazek() {
	var cilovyImg = document.getElementById('obrazek_hlavni');
	cilovyImg.style.visibility = 'visible';
}

function IdenticalClick() {
	if(document.getElementById('shipping_identical').checked) {
		document.getElementById('form_shipping').style.display = 'none';
	} else {
		document.getElementById('form_shipping').style.display = 'block';
	}
}

function SearchFocus(vychozi_text) {
	var l = document.getElementById('search_input');
	if(l.value == vychozi_text) l.value = '';
}

function SearchBlur(vychozi_text) {
	var l = document.getElementById('search_input');
	if(l.value == '') l.value = vychozi_text;
}

function ChangePage(strana) { 
	document.getElementById("search-paging").strana.value = strana;
	document.getElementById("search-paging").submit();
}

function JenCisla() {
	with (event) if (keyCode < 48 || keyCode > 57) returnValue = false;
}