function showorhide( val ) {
    var obj = document.getElementById( val ) ;
    if ( obj.style.display == "block" ) {
        obj.style.display = "none" ;
    } else {
        obj.style.display = "block" ;
    }    
}

function show( item ) {
    var obj = document.getElementById( item );
    var lnk = document.getElementById( 'a_' + item );
    obj.style.display = 'block';
//    lnk.className = 'close';
//    lnk.innerHTML = 'bezár';
    lnk.href = 'javascript:hide("' + item + '");';
    window.focus() ;
}

function hide( item ) {
    var obj = document.getElementById( item );
    var lnk = document.getElementById( 'a_' + item );
    obj.style.display = "none";
//    lnk.className = 'expand';
//    lnk.innerHTML = 'megnyit';
    lnk.href = 'javascript:show("' + item + '");';
    window.focus() ;
}