function change( id, img, url, kid )
{
    var tab = new Array();
    tab[0] = './images/k_demo_on.jpg';
    tab[1] = './images/k_makler_on.jpg';
    tab[2] = './images/k_ekomako_on.jpg';
    tab[3] = './images/k_biuro_on.jpg';

    for(var z=1;z<=4;z++)
    {
        if( z == kid )
        {
            document.getElementById('kb' + z).src = tab[z-1];
            document.getElementById('kb' + z).onmouseover = function() { changePic( z, false, false ); }
            document.getElementById('kb' + z).onmouseout = function() { changePic( z, false, false ); }
        }
        else
        {
            document.getElementById('kb' + z).onmouseover = function() { changePic( z, true, false ); }
            document.getElementById('kb' + z).onmouseout = function() { changePic( z, false, true ); }
        }
    }
}