var ticker = 0;

function changebubble() {
    if (ticker >= bubble.length) {
       ticker = 0;
    }
    var buttonname  = "button_" + ticker;
    bub = document.getElementById("bubbletext");
    bu1 = document.getElementById(buttonname);

    for(buttid=0;buttid<bubble.length;buttid=buttid+1){
      var bn  = "button_" + buttid;
      bu = document.getElementById(bn);
      bu.style.backgroundImage = "URL('images/button_off.jpg')";
    }
    bub.innerHTML = bubble[ticker];
    bu1.style.backgroundImage = "URL('images/button_on.jpg')";
    
    ind = document.getElementById("bubbleindicator");
    ind.style.left = 40+91*ticker + 'px';

    setTimeout("changebubble()", speed);
    ticker++;
}
onload = changebubble;

function show(name) {
	var e = document.getElementById(name);
	e.style.display = 'block';
}

function hide(name) {
	var e = document.getElementById(name);
	e.style.display = 'none';
}

function divfiller(boid, usercolor){
	var e = document.getElementById(boid);
	e.style.background = usercolor;
}

function pswitcher(nummer){
  switch (nummer) {
  case 0:
	show('kanal-0');
	hide('kanal-1');
	divfiller('ptab-0','white');
	divfiller('ptab-1','#CCC');
	break;
	
	case 1:
	show('kanal-1');
	hide('kanal-0');
	divfiller('ptab-1','white');
	divfiller('ptab-0','#CCC');
  break;
	}
}