var timer = null;
var old = null;



function zobrazMenu(idecko) {
  	if (timer) {
  		clearTimeout(timer);
      if (old != idecko) {
          skryj(old);
      }
  	}

    var z = document.getElementById(idecko).style;
    z.display = "block";
    old = idecko;
}
function skryjMenu(idecko) {
    timer = setTimeout("skryj('" + idecko + "')", 250);
    
}
function skryj(idecko) {
    var z = document.getElementById(idecko).style;
    
    z.display = "none";
}

function prepni(kam) {
    var prvni = document.getElementById('left_folder').style;
    var druhy = document.getElementById('right_folder').style;
    
    if (kam == "right") {
        prvni.backgroundImage='url(../images/layout/rozcestnik_left.gif)';
        druhy.backgroundImage='url(../images/layout/rozcestnik_right_hover.gif)';

        prvni.width = '107px';
        druhy.width = '85px';

        document.getElementById('right').style.paddingLeft = '0px';
        document.getElementById('left').style.paddingLeft = '20px';

        document.getElementById('left_middle').style.display = 'none';
        document.getElementById('right_middle').style.display = 'block';
        
    } else if (kam == "left") {
        prvni.backgroundImage='url(../images/layout/rozcestnik_left_hover.gif)';
        druhy.backgroundImage='url(../images/layout/rozcestnik_right.gif)';

        prvni.width = '85px';
        druhy.width = '107px';

        document.getElementById('right').style.paddingLeft = '20px';
        document.getElementById('left').style.paddingLeft = '9px';

        document.getElementById('left_middle').style.display = 'block';
        document.getElementById('right_middle').style.display = 'none';
    }
}