var mainMenu = 0;
var imgPfad = "http://www.dachterrasse-musik.de/img/_but/";


function showHeader(nummer)
{
	getElement("id", "header" + nummer).style.visibility = "visible";	
}

function hideHeader(nummer)
{
	getElement("id", "header" + nummer).style.visibility = "hidden";	
}


function showSubMenu1()
{
	document.menuBandImg.src = imgPfad + "but_band_hi.jpg";
	getElement("id", "subMenu1").style.visibility = "visible";	
}

function hideSubMenu1()
{
	
	if (mainMenu == 1) {
		document.menuBandImg.src = imgPfad + "but_band_marked.jpg";
	}
	else
		document.menuBandImg.src = imgPfad + "but_band_lo.jpg";
	getElement("id", "subMenu1").style.visibility = "hidden";	
}

function showSubMenu2()
{
	document.menuMusikImg.src = imgPfad + "but_musik_hi.jpg";
	getElement("id", "subMenu2").style.visibility = "visible";	
}

function hideSubMenu2()
{
	
	if (mainMenu == 2)
		document.menuMusikImg.src = imgPfad + "but_musik_marked.jpg";
	else
		document.menuMusikImg.src = imgPfad + "but_musik_lo.jpg";
	getElement("id", "subMenu2").style.visibility = "hidden";	
}

function showSubMenu3()
{
	document.menuTermineImg.src = imgPfad + "but_termine_marked.jpg";	
}

function hideSubMenu3()
{
	
	if (mainMenu == 3)
		document.menuTermineImg.src = imgPfad + "but_termine_marked.jpg";
	else
		document.menuTermineImg.src = imgPfad + "but_termine_lo.jpg";	
}

function showSubMenu4()
{
	document.menuKontaktImg.src = imgPfad + "but_kontakt_hi.jpg";
	getElement("id", "subMenu4").style.visibility = "visible";	
}

function hideSubMenu4()
{
	
	if (mainMenu == 4)
		document.menuKontaktImg.src = imgPfad + "but_kontakt_marked.jpg";
	else
		document.menuKontaktImg.src = imgPfad + "but_kontakt_lo.jpg";
	getElement("id", "subMenu4").style.visibility = "hidden";	
}


function showSubMenu5()
{
	document.menuGastebuchImg.src = imgPfad + "but_gastebuch_marked.jpg";
}

function hideSubMenu5()
{
	
	if (mainMenu == 5)
		document.menuGastebuchImg.src = imgPfad + "but_gastebuch_marked.jpg";
	else
		document.menuGastebuchImg.src = imgPfad + "but_gastebuch_lo.jpg";	
}


function showSubMenu6()
{
	document.menuNewsImg.src = imgPfad + "but_news_hi.jpg";
	getElement("id", "subMenu6").style.visibility = "visible";	
}

function hideSubMenu6()
{
	
	if (mainMenu == 6)
		document.menuNewsImg.src = imgPfad + "but_news_marked.jpg";
	else
		document.menuNewsImg.src = imgPfad + "but_news_lo.jpg";
	getElement("id", "subMenu6").style.visibility = "hidden";	
}


function Menue () {
  if (typeof window.pageYOffset == "number") {
    if (NS4) {
      getElement("id", "Nav").top = window.pageYOffset + 50;
    } else {
      getElement("id", "Nav").style.top = window.pageYOffset + 50;
    }
  } else {
    if (typeof document.body.scrollTop == "number")
      getElement("id", "Nav").style.top = document.body.scrollTop + 50;
  }
  if (OP)
    getElement("id", "NavLinks").style.pixelTop = NavLinksPos;
  if (NS4) {
    getElement("id", "Nav").visibility = "show";
  } else {
    getElement("id", "Nav").style.visibility = "visible";
  }
}

function noMenue () {
  if (NS4) {
    getElement("id", "Nav").visibility = "hide";
  } else {
    getElement("id", "Nav").style.visibility = "hidden";
  }
}

function handleMove (ev) {
  if (!ev)
    ev = window.event;
  var mausposition = ev.pageX ? ev.pageX : ev.clientX;
  if (mausposition < 20) {
      Menue();
  } else {
    if (mausposition > 250) {
      noMenue();
    }
  }
}

function Event_init () {
  if (document.addEventListener) {
    document.addEventListener("mousemove", handleMove, true);
  } else {
    if (NS4) {
      document.captureEvents(Event.MOUSEMOVE);
      document.onmousemove = handleMove;
    } else {
      document.body.onmousemove = handleMove;
    }
  }
  if (OP) {
    NavLinksPos = 42; // Position des Bereiches NavLinks
    getElement("id", "NavLinks").style.pixelTop = NavLinksPos;
  }
}