function getCookieVal (offset) {
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1)
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
   var arg = name + "=";
   var alen = arg.length;
   var clen = document.cookie.length;
   var i = 0;
   while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
        return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break; 
    }
   return null;
}

function SetCookie (name, value) {
    var argv = SetCookie.arguments;
    var argc = SetCookie.arguments.length;
    var expires = (argc > 2) ? argv[2] : null;
    var path = (argc > 3) ? argv[3] : null;
    var domain = (argc > 4) ? argv[4] : null;
    var secure = (argc > 5) ? argv[5] : false;
    document.cookie = name + "=" + escape (value) +
        ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
        ((path == null) ? "" : ("; path=" + path)) +
        ((domain == null) ? "" : ("; domain=" + domain)) +
        ((secure == true) ? "; secure" : "");
    }

function DeleteCookie() {
   var exp = new Date();
   exp.setTime (exp.getTime() - 1000000000);  // This cookie is history (changed -1 to make it previous time)
   var cval = GetCookie ('DemoName');
   document.cookie ='DemoName' + "=" + cval + "; expires=" + exp.toGMTString();
   alert("The cookie has been deleted.");
}

function CssStyleChanger(doc) {
	this.currDoc = doc;
	var currDoc = doc;
	var currentElement;
	var changedCssStyle;
	function setCurrentObjectById(objId) {		
		currentElement = doc.getElementById(objId);
	}
	this.setCurrentObjectById = setCurrentObjectById;
	function changeCssStyle(cssClassName) {
		changedCssStyle = currentElement.className;
		currentElement.className = cssClassName;
	}
	this.changeCssStyle = changeCssStyle;
	function undoChangingCssStyle() {
		currentElement.className = changedCssStyle;
	}
	this.undoChangingCssStyle = undoChangingCssStyle;
}

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_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 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 MM_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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

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

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function clearLogin(){
	document.LoginForm.username.value="";
	document.LoginForm.password.value="";
}

function usReverse(value, mode) {
    var i;
    var unscrambled = '';
    for (i=0; i<value.length; i++) {
        unscrambled += value.charAt(value.length-i-1)
    } // for
    if (mode == 'write') document.write(unscrambled);
    if (mode == 'open') window.open('mailto:'+unscrambled);
    if (mode == 'return') return unscrambled; 
}

window.addEvent('domready', function() {
    var font = 0.8;
    cookieFont = GetCookie('fontsize');
	
	//var sitecontentheight = document.getElementById('LayerSiteId').getHeight()+"px";
	var sitecontentheight = document.getElementById('LayerSiteId').offsetHeight+"px";
	document.getElementById('LayerSiteContentId').style.height=sitecontentheight;
    if(cookieFont > 0){
        var morph = new Fx.Morph($(document.body),{unit:'em'});
        morph.set({'font-size': cookieFont});
		
    }
	var layersite = document.getElementById('LayerSiteId');
	
	$('normal').addEvent('click', function(e) {
		e.stop();
		var morph = new Fx.Morph($(document.body),{unit:'em'});
		morph.set({'font-size': 0.8});
        SetCookie('fontsize',0.8);
		layersite.style.backgroundImage = "url(../../main/bilder/struktur/site_bg.jpg)";
	});
	$('big').addEvent('click', function(e) {
		e.stop();
		var morph = new Fx.Morph($(document.body),{unit:'em'});
		morph.set({'font-size': 0.9});
        SetCookie('fontsize',0.9);
		layersite.style.backgroundImage = "url(../../main/bilder/struktur/site_bg_big.jpg)";
	});
	$('bigger').addEvent('click', function(e) {
		e.stop();
		var morph = new Fx.Morph($(document.body),{unit:'em'});
		morph.set({'font-size': 1.0});
        SetCookie('fontsize',1);
		layersite.style.backgroundImage = "url(../../main/bilder/struktur/site_bg_bigger.jpg)";
	});
});