var default_classes = new Array;
function obarvi(Radek,RowNum,Trida) {
	if (Trida == '' || typeof(Radek.style) == 'undefined') { return false; }
	if (default_classes[RowNum] == null) { default_classes[RowNum] = Radek.className; }
	if (Trida == 'default') { Radek.className = default_classes[RowNum]; }
	else { Radek.className = Trida; }
	return true;
}
function wtch(txt,f) {
	if (txt=="xXx") {
		f.kat.style.display = 'block';
		f.kat.value = 'Název kategorie';
		f.kat.select();
		f.kat.focus();
	}
	else {
		f.kat.style.display = 'none';
		f.kat.value = '';
	}
}
function checkAllCheckboxes(form){
	box = form.getElementsByTagName('input');
	checked = (box[0].checked) ? true : false;
	for (i = 0; i < box.length; i++) {
		if (box[i].type == 'checkbox') {
			box[i].checked = checked;
		}
	}
}
function editCheckbox(form,position,checked){
	el = form.getElementsByTagName('input');
	box = new array();
	for (i = 0; i < el.length; i++) {
		if (el[i].type == 'checkbox') {
			box [box.length]= el[i];
		}
	}
	box[position].checked = checked;
}
function menuSort(num,direction){
	div = document.getElementById('div'+num);
	divDruhy = (direction=='up') ? document.getElementById('div'+(num-1)) : document.getElementById('div'+(num+1));

	if (divDruhy!=null) {
		if (direction=='up') {
			div.innerHTML = div.innerHTML.replace(/menuSort\((\d+)/g,'menuSort('+(num-1));
			div.id = 'div'+(num-1);
			divDruhy.innerHTML = divDruhy.innerHTML.replace(/menuSort\((\d+)/g,'menuSort('+num);
			divDruhy.id = 'div'+num;
		}
		else {
			div.innerHTML = div.innerHTML.replace(/menuSort\((\d+)/g,'menuSort('+(num+1));
			div.id = 'div'+(num+1);
			divDruhy.innerHTML = divDruhy.innerHTML.replace(/menuSort\((\d+)/g,'menuSort('+num);
			divDruhy.id = 'div'+num;
		}

		pomocnyHTML = div.innerHTML;
		pomocnyId = div.id;

		div.innerHTML = divDruhy.innerHTML;
		div.id = divDruhy.id;
		divDruhy.innerHTML = pomocnyHTML;
		divDruhy.id = pomocnyId;
	}
}