var menue_items = new Array("Wer wir sind", "Was wir tun", "Ihre Vorteile", "Unsere Beratung", "Kontakt");
var menue_bar="";
var active_nav=0;
function init(){
	draw_menue();
	var active_menue_item =  MyGetParam("nav");
	if (active_menue_item<5){
		nav_menue_over(active_menue_item);
	}
	set_contents(active_menue_item);
}
function draw_menue(){
	var menue_text = "";
	for(var i=0;i<menue_items.length;i++){
		menue_text += "<span class='menue_oben' id='menue_item_" + i + "' onclick='set_contents("+i+")' onmouseover='nav_menue_over("+i+")' onmouseout='nav_menue_out("+i+")'>";
		menue_text += menue_items[i];
		menue_text += "</span>";
	}
	document.getElementById('menue_bar').innerHTML=menue_text;
}
function nav_menue_over(p_item){
	obj=document.getElementById("menue_item_"+p_item);
	obj.className="menue_oben menue_active";
}
function nav_menue_out(p_item){
	if(p_item!=active_nav){
		obj=document.getElementById("menue_item_"+p_item);
		obj.className="menue_oben";
	}
}
function set_contents(p_item){
	active_nav=p_item;
	for (var i=0;i<5;i++){
		nav_menue_out(i);
		document.getElementById("main_top_"+i).style.display="none";
		document.getElementById("main_bottom_"+i).style.display="none";
	}
	for (var i=5;i<8;i++){
		document.getElementById("main_top_"+i).style.display="none";
	}
	document.getElementById("main_top_"+p_item).style.display="block";
	if(p_item<5){
		document.getElementById("main_bottom_"+p_item).style.display="block";
	}
}
function MyGetParam(param) {
	var url = String(window.location);
	var v_return=0;
	if(window.location.search != "") {
		var undef = url.split("?");
		var args = undef[1].split("&");
		for(i = 0; i < args.length; i++) {
			var a = args[i].split("=");
			if(a[0] == param) {
				v_return=a[1];
			}
		}
	}
	else{
	window.location.search="?nav=0";
	}
	return v_return;
}