function show_element(id) {
    el = document.getElementById(id);
    if (el.style.display == "none" || el.style.display == "") {
        el.style.display = "block";
        el.style.visibility = "visible";
    }
    else {
        el.style.display = "none";
        el.style.visibility = "hidden";
    }
}  

function show_hide_detail(id) {
    el = document.getElementById(id);
    if (el.style.display == "none" || el.style.display == "") {
        el.style.display = "table-row";
        el.style.visibility = "visible";
    }
    else {
        el.style.display = "none";
        el.style.visibility = "hidden";
    }
}


function _delete(url){
  if (confirm("Opravdu chcete smazat tento záznam?")) window.location=url;
}

function _archiv(url){
  if (confirm("Opravdu chcete archivovat tento projekt?")) window.location=url;
}

function _delarchiv(url){
  if (confirm("Opravdu chcete NAVŽDY smazat tento projekt? Operace je nevratná!")) window.location=url;
}

function toggleVisibility(class_name){
	if ($('.' + class_name + ':first').css('display') == 'none'){
		$('.' + class_name + '-toggle').hide();
		$('#' + class_name + '-hide').show();
	} else {
		$('.' + class_name + '-toggle').show();
		$('#' + class_name + '-hide').hide();
	}
	$('.' + class_name).toggle();
	return true;

}