function preLoad() {
	bilderSrcArr = new Array('pics/astrophysik_ov.gif','pics/links_ov.gif','pics/physik_ov.gif','pics/gaestebuch_ov.gif','pics/start_ov.gif','pics/downloads_ov.gif','pics/astronomie_ov.gif','pics/kontakt_ov.gif');
	bilderListArr = new Array();
	for (counter in bilderSrcArr) {
		bilderListArr[counter] = new Image();
		bilderListArr[counter].src = bilderSrcArr[counter];
	}
}		
function setButton(){
	var getTitle = document.title;
	var astrophysik = getTitle.match(/\bAstrophysik\b|\bSpektralanalyse\b|\bObjekte\b|\bUniversum\b/g);
	var astronomie = getTitle.match(/\bAstronomie\b|\bOptische\b|\bBerechnungsgrundlagen\b|\bTeleskope\b|\bEntfernungsmessung\b|\bForschung\b/g);
	var physik = getTitle.match(/\bPhysik\b|\bSpezielle\b|\bQuantenmechanik\b|\bSuperstringtheorie\b|\bTeilchenphysik\b|\bSternstunden\b/g);
	var links = getTitle.match(/\bLinkseite\b/g);
	var downloads = getTitle.match(/\bDownloads\b/g);
	var archiv = getTitle.match(/\bArchiv\b/g);
	var register = getTitle.match(/\bRegister\b/g);
	var kontakt = getTitle.match(/\bKontaktformular\b/g);
	var downloads = getTitle.match(/\bDownloads\b/g);
	var start = getTitle.match(/\bDer Kosmos\b|\bImpressum\b/g);
	
	getImage("astrophysikImg").src = "pics/astrophysik_ot.gif";
	getImage("astronomieImg").src = "pics/astronomie_ot.gif";
	getImage("physikImg").src = "pics/physik_ot.gif";
	getImage("linksImg").src = "pics/links_ot.gif";
	getImage("downloadsImg").src = "pics/downloads_ot.gif";
	getImage("archivImg").src = "pics/archiv_ot.gif";
	getImage("registerImg").src = "pics/register_ot.gif";
	getImage("startImg").src = "pics/start_ot.gif";
	getImage("kontaktImg").src = "pics/kontakt_ot.gif";
	getImage("gaestebuchImg").src = "pics/gaestebuch_ot.gif";
	getImage("startImg").src = "pics/start_ot.gif";
	
	if (astrophysik){  
	  getImage("astrophysikImg").src = "pics/astrophysik_ac.gif";   
	}
	if (astronomie){  
	  getImage("astronomieImg").src = "pics/astronomie_ac.gif";   
	}
	if (physik){  
	  getImage("physikImg").src = "pics/physik_ac.gif";   
	}
	if (links){  
	  getImage("linksImg").src = "pics/links_ac.gif";   
	}
	if (downloads){  
	  getImage("downloadsImg").src = "pics/downloads_ac.gif";   
	}
	if (archiv){  
	  getImage("archivImg").src = "pics/archiv_ac.gif";   
	}
	if (register){  
	  getImage("registerImg").src = "pics/register_ac.gif";   
	}
	if (kontakt){  
	  getImage("kontaktImg").src = "pics/kontakt_ac.gif";   
	}
	if (start){  
	  getImage("startImg").src = "pics/start_ac.gif";   
	}	
}

MM_swapImage();

function closeDiv(){
	hideLayer("astronomieDiv");
	hideLayer("astrophysikDiv");
	hideLayer("physikDiv");
	}
	
if(document.layers)
	{
        window.captureEvents(Event.MOUSEUP);
        window.onmouseup=closeDiv;
	} 
else
	{
        document.onmouseup=closeDiv;
	}
	
function setOver(x) {
   	var image = x;
   	var button = getImage(image + "Img").src;
   	var passt = button.search(/_ac.+/);
	hideLayer("astronomieDiv");
	hideLayer("astrophysikDiv");
	hideLayer("physikDiv");
   	if (passt == -1)
   		{ 
   		getImage(image + "Img").src = "pics/" + image + "_ov.gif";
   		}
	if (image == "astrophysik" )
		{
		showLayer(image + "Div");
		}
	if (image == "astronomie" )
		{
		showLayer(image + "Div");
		}
	if (image == "physik" )
		{
		showLayer(image + "Div");
		}
}

function setOut(x) {
	image = x;
    var button = getImage(image + "Img").src;
    var passt = button.search(/_ac.+/);
	
	if (passt == -1)
	{  	  
	  getImage(image + "Img").src = "pics/" + image + "_ot.gif";  
  	}

}

function setAncor() {
  var ancor = window.location.hash;
  if(ancor != 0){
	  newYPosInt = 282;
      setTop("contentDiv", newYPosInt);
	  }
}
	
function scrolling() {
  if (getLayer("naviDiv")) {
    newYPosInt = getPageScrollY() + 143;
    	setTop("naviDiv", newYPosInt);
  }
  if (getLayer("astrophysikDiv")) {
    newYPosInt = getPageScrollY() + 149;
    	setTop("astrophysikDiv", newYPosInt);
  }
  if (getLayer("astronomieDiv")) {
    newYPosInt = getPageScrollY() + 175;
    	setTop("astronomieDiv", newYPosInt);
  }
  if (getLayer("physikDiv")) {
    newYPosInt = getPageScrollY() + 202;
    	setTop("physikDiv", newYPosInt);		
  }
    if (getLayer("forumDiv")) {
    newYPosInt = getPageScrollY() + 146;
    	setTop("forumDiv", newYPosInt);		
  }
  if (getLayer("bannerDiv")) {
    newYPosInt = getPageScrollY() + 146;
    	setTop("bannerDiv", newYPosInt);		
  }
}

function setScrolling() {
  if (getLayer("naviDiv")) {
    scrollIv = setInterval("scrolling()", 100);
  }
}

function stop() {
  if (scrollIv)
  {
    clearInterval(scrollIv);	
  }
}

function init(){ 
	preLoad();
	//setAncor();
	//initsnow();
	setScrolling();	
	setButton();
	//initLightbox();
}