function showHide(ebene) {
	if(document.getElementById(ebene).style.display == "block") {
		document.getElementById(ebene).style.display = "none";
	} else {
		document.getElementById(ebene).style.display = "block";
	}	
}

var timerlen = 5;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "px";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up")
                obj[objname].style.display = "none";

        obj[objname].style.height = endHeight[objname] + "px";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}

function toggleContentSlide(objname){
  if(document.getElementById(objname).style.display == "none"){
    slidedown(objname);
  }else{
    slideup(objname);
  }
}

function CreateBookmarkLink(title,url) {

	if (window.sidebar) { // Mozilla Firefox Bookmark
		window.sidebar.addPanel(title, url,"new");
	} else if( window.external ) { // IE Favorite
		window.external.AddFavorite( url, title); }
	else if(window.opera && window.print) { // Opera Hotlist
		return true; }
 }


function toggleSZ(on,id,lang) {
	var active = "http://www.ddr-museum.de/img/sz/"+lang+"/"+id+"a.jpg";
	var inactive = "http://www.ddr-museum.de/img/sz/"+lang+"/"+id+".jpg";
	var name = "sz"+id;
	if(on == "on") {
		document.getElementById(name).src = active;
	} else {
		document.getElementById(name).src = inactive;
	}
}


function toggleMenu(on,id) {
	var active = "https://www.shop.ddr-museum.de/themes/cpshop/img/menu/"+id+"_aktiv.jpg";
	var inactive = "https://www.shop.ddr-museum.de/themes/cpshop/img/menu/"+id+".jpg";
	var name = "menu_"+id;
	if(on == "on") {
		document.getElementById(name).src = active;
	} else {
		document.getElementById(name).src = inactive;
	}
}

function toggleSZMenu(on,cid,id,sprache) {
	var active = "http://www.ddr-museum.de/img/sz/"+sprache+"/"+cid+"button"+id+"a.jpg";
	var inactive = "http://www.ddr-museum.de/img/sz/"+sprache+"/"+cid+"button"+id+".jpg";
	name = "sznavi-"+id;
	if(on == "on") {
		document.getElementById(name).src = active;
	} else {
		document.getElementById(name).src = inactive;
	}
}


function LimitList(url) {
	window.location.href = url+"&limit="+document.limitform.limit.value;
}