function change_opacity(what, opacity){
  
  if (navigator.appName.indexOf("Explorer") != -1){
    document.getElementById(what).filters.alpha.opacity= opacity;
  } else {
    document.getElementById(what).style.MozOpacity = (opacity / 100);
  }
  
 }
 
 function get_opacity(what){
  if (navigator.appName.indexOf("Explorer") != -1){
    return document.getElementById(what).filters.alpha.opacity;
  } else {
    return document.getElementById(what).style.MozOpacity * 100;
  }
 }
 
 function toggle_visibility(what) {
  var zielobjekt;
  zielobjekt = document.getElementById(what);
  
  if(zielobjekt.style.visibility != 'hidden') {
   zielobjekt.style.visibility = 'visible';
  } else {
   zielobjekt.style.visibility = 'hidden';
  }
 }
 
 function toggle_display(what) {
  var zielobjekt;
  zielobjekt = document.getElementById(what);
  
  if(zielobjekt.style.display != 'none') {
   zielobjekt.style.display = 'none';
  } else {
   zielobjekt.style.display = 'block';
  }
 }
 
 function zeige_vorschau_zwei() {
  
  toggle_display('vorschau_kpf_fronten');
  toggle_display('vorschau_apl_fronten');
  
 }
 

 
 
 
 
 function step_show(nummer) {
 
  /* Steps durchlaufen */
   
   for(i=1;i<=7;i++){
    
      if(nummer == i){
      
        document.getElementById('submen_' + i).src = 'img/submenuepunkt_active.jpg';
        document.getElementById('head_' + i).className = 'schritt_active';
        
        document.getElementById('main_' + i).style.display = 'block';
        
      } else {
      
        document.getElementById('submen_' + i).src = 'img/submenuepunkt.jpg';
        document.getElementById('head_' + i).className = 'schritt';
        
        document.getElementById('main_' + i).style.display = 'none';
         
        
     }
      
    
   } 
   
 }
 
 
 function print_popUp(what) {
  
 }
 
 
 
 

/**
* John Resig Methode
*/
function addEvent( obj, type, fn )
{ 
   if (obj.addEventListener) {
      obj.addEventListener( type, fn, false );
   } else if (obj.attachEvent) {
      obj["e"+type+fn] = fn;
      obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
      obj.attachEvent( "on"+type, obj[type+fn] );
   }
}

function removeEvent( obj, type, fn )
{
   if (obj.removeEventListener) {
      obj.removeEventListener( type, fn, false );
   } else if (obj.detachEvent) {
      obj.detachEvent( "on"+type, obj[type+fn] );
      obj[type+fn] = null;
      obj["e"+type+fn] = null;
   }
}





function aktionswocheSetText ( text ) {
 if(document.getElementById('aktionswochenBeschreibung')) {
  document.getElementById('aktionswochenBeschreibung').innerHTML = text;
 }
}