function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function SwapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function SwapImage() { //v3.0
  var i,j=0,x,a=SwapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=FindObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function FindObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=FindObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function tmt_findObj(n){
	var x,t; if((n.indexOf("?"))>0&&parent.frames.length){t=n.split("?");
	x=eval("parent.frames['"+t[1]+"'].document.getElementById('"+t[0]+"')");
	}else{x=document.getElementById(n)}return x;
}

function ShowHideLayers() { //v3.0A Modified by Al Sparber and Massimo Foti for NN6 Compatibility
  var i,p,v,obj,args=ShowHideLayers.arguments;if(document.getElementById){
   for (i=0; i<(args.length-2); i+=3){ obj=tmt_findObj(args[i]);v=args[i+2];
   v=(v=='show')?'visible':(v='hide')?'hidden':v;
   if(obj)obj.style.visibility=v;}} else{
  for (i=0; i<(args.length-2); i+=3) if ((obj=FindObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }}
}

function getPageCoords (elementId) {
     var element;
     if (document.all)
       element = document.all[elementId];
     else if (document.getElementById)
       element = document.getElementById(elementId);
     if (element) {
       var coords = {x: 0, y: 0};
       do {
		if(element.currentStyle)
		{
			if(element.currentStyle.position!='relative')
			{
				coords.x += element.offsetLeft;
				coords.y += element.offsetTop;
			}
		}
		else
		{
			coords.x += element.offsetLeft;
			coords.y += element.offsetTop;
		}

         element = element.offsetParent;
       }
       while (element)
       return coords;
     }
     else
       return null;
    } 

function alertCoo(el)
{
    var coords = getPageCoords(el);
    if (coords)
      alert(coords.x + ':' + coords.y); 
}



function position_layer(parent_layer,child_layer,visibility_layer,xoffset,yoffset) {
	var coords = getPageCoords(parent_layer);
	ShowHideLayers(child_layer,'',visibility_layer);
	document.getElementById(child_layer).style.top=coords.y+yoffset;
	document.getElementById(child_layer).style.left=coords.x+xoffset;
}

function set_layers() {
	position_layer('container','nav_werbung','show',310,85);
	position_layer('container','nav_protokoll','show',0,320);
	position_layer('container','nav_referate','show',60,220);
	position_layer('container','nav_biografien','show',120,120);
	position_layer('container','nav_comicbuch','show',460,143);

	if (document.getElementById('text_intro').style.visibility == "hidden") {
		position_layer('container','text_intro','hide',450,350);
	}
	else {
		position_layer('container','text_intro','show',450,350);
	}
	
	if (document.getElementById('text_werbung').style.visibility == "hidden") {
		position_layer('container','text_werbung','hide',450,350);
	}
	else {
		position_layer('container','text_werbung','show',450,350);
	}
	
	if (document.getElementById('text_protokoll').style.visibility == "hidden") {
		position_layer('container','text_protokoll','hide',450,350);
	}
	else {
		position_layer('container','text_protokoll','show',450,350);
	}
	
	if (document.getElementById('text_biografien').style.visibility == "hidden") {
		position_layer('container','text_biografien','hide',450,350);
	}
	else {
		position_layer('container','text_biografien','show',450,350);
	}
	
	if (document.getElementById('text_comicbuch').style.visibility == "hidden") {
		position_layer('container','text_comicbuch','hide',450,350);
	}
	else {
		position_layer('container','text_comicbuch','show',450,350);
	}
	
	if (document.getElementById('text_referate').style.visibility == "hidden") {
		position_layer('container','text_referate','hide',450,350);
	}
	else {
		position_layer('container','text_referate','show',450,350);
	}

	position_layer('container','adresse','show',25,535);
}

function show_content(id) {

	document.getElementById('link_werbung').className="nav";
	document.getElementById('link_protokoll').className="nav";
	document.getElementById('link_referate').className="nav";
	document.getElementById('link_biografien').className="nav";
	document.getElementById('link_comicbuch').className="nav";
	
	ShowHideLayers('text_intro','','hide');
	ShowHideLayers('text_werbung','','hide');
	ShowHideLayers('text_referate','','hide');
	ShowHideLayers('text_protokoll','','hide');
	ShowHideLayers('text_biografien','','hide');
	ShowHideLayers('text_comicbuch','','hide');
	
	
	ShowHideLayers('text_'+id,'','show');
	if (id != "intro") {
		document.getElementById('link_'+id).className="nav_active";
	}
}