// JavaScript Document
function ZmienStyl(id,typ)
{
if(typ=='on')
{
document.getElementById(id).className='link1hover';
document.getElementById('dz'+id).className='DzialyHover';
}
else
{
document.getElementById(id).className='link1';
document.getElementById('dz'+id).className='dzialy';
}
}

function switchBlocks(blockID) {
    var block = document.getElementById(blockID);
    
    if (block != null) {
        if ((block.style.display == "block") || (block.style.display == "")) {
            block.style.visibility = "hidden";
            block.style.display = "none";
        } else {
            block.style.visibility = "visible";
            block.style.display = "block";
        }
    }
}