function change_search(id) {
    //document.getElementById('menulink').className='active';
    if(id=="1") {
        hide("dum_panu_z_kunstatu");
        hide("galerie_g99");
        hide("kratke_zpravy");
        hide("ostatni");
        hide("spolek_pratel_domu_umeni");
        show("dum_umeni","block");
        
        document.getElementById('1').className='underline';
        document.getElementById('2').className='';
        document.getElementById('3').className='';
        document.getElementById('4').className='';
        document.getElementById('5').className='';
        document.getElementById('6').className='';
    
    }
    if(id=="2") {
        hide("dum_umeni");
        hide("galerie_g99");
        hide("kratke_zpravy");
        hide("ostatni");
        hide("spolek_pratel_domu_umeni");
        show("dum_panu_z_kunstatu","block");
        
        document.getElementById('1').className='';
        document.getElementById('2').className='underline';
        document.getElementById('3').className='';
        document.getElementById('4').className='';
        document.getElementById('5').className='';
        document.getElementById('6').className='';
    
    }
    if(id=="3") {
        hide("dum_panu_z_kunstatu");
        hide("dum_umeni");
        hide("kratke_zpravy");
        hide("ostatni");
        hide("spolek_pratel_domu_umeni");
        show("galerie_g99","block");
        
        document.getElementById('1').className='';
        document.getElementById('2').className='';
        document.getElementById('3').className='underline';
        document.getElementById('4').className='';
        document.getElementById('5').className='';
        document.getElementById('6').className='';
    
    }
    if(id=="4") {
        hide("dum_panu_z_kunstatu");
        hide("galerie_g99");
        hide("dum_umeni");
        hide("ostatni");
        hide("spolek_pratel_domu_umeni");
        show("kratke_zpravy","block");
        
        document.getElementById('1').className='';
        document.getElementById('2').className='';
        document.getElementById('3').className='';
        document.getElementById('4').className='underline';
        document.getElementById('5').className='';
        document.getElementById('6').className='';
    
    }
    if(id=="5") {
        hide("dum_panu_z_kunstatu");
        hide("galerie_g99");
        hide("kratke_zpravy");
        hide("dum_umeni");
        hide("spolek_pratel_domu_umeni");
        show("ostatni","block");
        
        document.getElementById('1').className='';
        document.getElementById('2').className='';
        document.getElementById('3').className='';
        document.getElementById('4').className='';
        document.getElementById('5').className='underline';
        document.getElementById('6').className='';
    
    }
    if(id=="7") {
        hide("dum_panu_z_kunstatu");
        hide("galerie_g99");
        hide("kratke_zpravy");
        hide("dum_umeni");
        hide("ostatni");
        show("spolek_pratel_domu_umeni","block");

        document.getElementById('1').className='';
        document.getElementById('2').className='';
        document.getElementById('3').className='';
        document.getElementById('4').className='';
        document.getElementById('5').className='underline';
        document.getElementById('6').className='';

    }
    
    if(id=="6") {
        show("dum_panu_z_kunstatu","block");
        show("galerie_g99","block");
        show("kratke_zpravy","block");
        show("dum_umeni","block");
        show("spolek_pratel_domu_umeni", "block");
        show("ostatni","block");
        
        document.getElementById('1').className='';
        document.getElementById('2').className='';
        document.getElementById('3').className='';
        document.getElementById('4').className='';
        document.getElementById('5').className='';
        document.getElementById('6').className='underline';
    
    }
}

function show(id, how){
    
    if (navigator.appName == 'Microsoft Internet Explorer') {
        element=document.getElementById(id).style;
        element.display = 'block';
    }
    else {
        element=document.getElementById(id).style;
        element.display = how;
    }
}
// ......................................................................
function hide(id){
    element=document.getElementById(id).style;
    element.display = 'none';
}