function Ttal() {
}

Ttal.nav_click = function (elem) {
  if (! elem){
    return;
  }
  if (! Ttal.runSript){
    return;
  }
  Ttal.setRunSript(false);
  var className = Ttal.getClassName(elem);
  var idx = elem.id.toString().split(/\-/)[2];
  if (Ttal.remLastIDX == idx){
    Ttal.tempFunction = function() {
      Ttal.remLastIDX = undefined;
      Ttal.setRunSript(true);
    }
    Ttal.resetNavigation();
    Ttal.resetContent();  
    return;
  }
  Ttal.remLastIDX = idx;
  var idxInhalt = 'inhalt-' + idx;
  var elemInhalt = document.getElementById(idxInhalt);
  var leftPos = Tools.getElementDocumentPositionLeft(elem) + ((elem.offsetWidth / 2) + 5);
  var topPos = Tools.getElementDocumentPositionBottom(elem) - 20;
  Ttal.tempFunction = function() { 
    Ttal.fadeInContent(elemInhalt, 0, topPos, leftPos);
  }
  Ttal.resetNavigation();
  Ttal.setActiveNavigation(elem);
  Ttal.resetContent();  
  return;
}

Ttal.setActiveNavigation = function (elem) {
  if (! elem){
    return;
  }
  var nav = document.getElementById(elem.id);
  nav.zIndex = '8';
  var className = Ttal.getClassName(nav, className);
  className += '-active';
  Ttal.setClassName(nav, className);
  //alert(nav.className);
}  

Ttal.resetNavigation = function () {
  for (var i=1; i<Ttal.navigationItemLength; i++){
    var idx = 'navigation-item-' + i;
    var elem = document.getElementById(idx);
    if (! elem){
      continue;
    }
    className = Ttal.getClassName(elem);
    if (className){
      className = className.toString().replace(/\-active/,'');
      Ttal.setClassName(elem, className);
      //alert('xxx' + elem.className);
    }  
    elem.zIndex = '7';
  } 
}  

Ttal.resetContent = function () {
  var enfunc = false;
  for (var i=1; i<Ttal.navigationItemLength; i++){
    var idx = 'inhalt-' + i;
    var elem = document.getElementById(idx);
    if (! elem){
      continue;
    }
    if (! elem.style.display || elem.style.display == 'none'){
      continue;
    }
    Ttal.fadeOutContent(elem, 0, Ttal.tempFunction);
    enfunc = true;
  } 
  if (!enfunc){
    Ttal.tempFunction();
  }
}

Ttal.fadeInContent = function (elem, diff, topPos, leftPos) {
  if (! elem){
    Ttal.setRunSript(true);
    return;
  }
  if (Ttal.timeoutFadeIn){
    window.clearTimeout(Ttal.timeoutFadeIn);
  }
  if (topPos){
    elem.style.top = topPos + 'px';
  }   
  if (leftPos){
    elem.style.left = leftPos + 'px';
  }
  elem.style.display = 'block';
  var opGrenzwert = 1;
  if (elem.filters != undefined){
    // IE
    opGrenzwert = 100;
    var opValue = parseFloat(0 + parseFloat(diff));
    opValue = parseInt(opValue * 100) / 100;
    if (opValue < 0){
      opValue = 0;
    }
    elem.filters['Alpha']['opacity'] = opValue;
    elem.filters['Alpha']['finishopacity'] = opValue;
    diff += 8;
  } else {
    // Other
    var opValue = parseFloat(0 + parseFloat(diff));
    opValue = parseInt(opValue * 100) / 100;
    if (opValue > 1){
      opValue = 1;
    }
    elem.style.opacity = opValue;
    diff += 0.08;
  }
  if (opValue < opGrenzwert) {
    var func = function () {Ttal.fadeInContent(elem, diff, topPos, leftPos)};
    Ttal.timeoutFadeIn = window.setTimeout(func, Ttal.fadeInDelay);
    return;
  }
  Ttal.setRunSript(true);
}

Ttal.fadeOutContent = function (elem, diff, endfunc) {
  if (! elem){
    return;
  }
  if (Ttal.timeoutFadeOut){
    window.clearTimeout(Ttal.timeoutFadeOut);
  }
  
  if (elem.filters != undefined){
    // IE
    var opValue = parseFloat(100 - parseFloat(diff));
    opValue = parseInt(opValue * 100) / 100;
    if (opValue < 0){
      opValue = 0;
    }
    elem.filters['Alpha']['opacity'] = opValue;
    elem.filters['Alpha']['finishopacity'] = opValue;
    diff += 5;
  } else {
    // Other
    var opValue = parseFloat(1 - parseFloat(diff));    
    opValue = parseInt(opValue * 100) / 100;
    if (opValue < 0){
      opValue = 0;
    }
    elem.style.opacity = opValue;
    diff += 0.05;
  }
  if (opValue > 0) {
    var func = function () {Ttal.fadeOutContent(elem, diff, endfunc)};
    Ttal.timeoutFadeOut = window.setTimeout(func, Ttal.fadeOutDelay);
    return;
  }
  if (endfunc != undefined){
    endfunc();
  }
  elem.style.display = 'none';
}

Ttal.getClassName = function (elem) {
  if (! elem){
    return;
  }
  var className = 'class';
  if (document.all && ! navigator.userAgent.toString().match(/Opera/)){
    className = 'className';
  }
  return elem.getAttribute(className);
}

Ttal.setClassName = function (elem, name) {
  if (! elem){
    return;
  }
  var className = 'class';
  if (document.all && ! navigator.userAgent.toString().match(/Opera/)){
    className = 'className';
  }
  elem.setAttribute(className, name);
}

Ttal.unsetFocusBorder = function () {
  var arr = document.getElementsByTagName('a');
  if (arr){
    for (var i=0; i<arr.length; i++) {
      arr[i].onfocus = arr[i].blur;
    }
  }
}

Ttal.setRunSript = function (bol) {
  Ttal.runSript = bol;
}

Ttal.init = function () {
  Ttal.unsetFocusBorder();  
} 

Ttal.tempFunction = function () {

} 

Ttal.navigationItemLength = 7;

Ttal.runSript = true;

Ttal.remLastIDX = undefined;

Ttal.timeoutFadeOut = undefined;
Ttal.fadeOutDelay = 60;
Ttal.timeoutFadeIn = undefined;
Ttal.fadeInDelay = 100;