onMenue=false;
function activate(idStr){
	ebene=parseInt(idStr.length/2);
	document.getElementById(idStr).style.backgroundImage="url(images/nav/nav_bg"+ebene+"_a.gif)";
	if(idStr.length>5)
		document.getElementById("t"+idStr).style.color="#666666";
}
function deactivate(idStr){
	ebene=parseInt(idStr.length/2);
	document.getElementById(idStr).style.backgroundImage="url(images/nav/nav_bg"+ebene+".gif)";
	if(idStr.length>5)
		document.getElementById("t"+idStr).style.color="#999999";
}
function clearAll(){
	for(c=0;c<currentVisible.length;c++)
	{
		if(parent.currentIdStr.indexOf(currentVisible[c]) == 0)
		{
			activate(currentVisible[c]);
		}
		else
			deactivate(currentVisible[c]);
	}	
}
function onNav(idStr){
	clearAll();
	onMenue=true;
	activate(idStr);
}
function outNav(){
	onMenue=false;
}
function clickNav(idStr){
	onMenue=false;
	//alert(parent.navigation[idStr]['typ']);
	
	if(parent.navigation[idStr]['typ']=="leer")
		parent.currentIdStr=idStr;
	else if (parent.navigation[idStr]['typ']=="extern")
	{
		
	}
	else
	{
		parent.currentIdStr=idStr;
		if(parent.navigation[idStr]['target']=="_top")
			parent.location.href=parent.navigation[idStr]['url'];
		else
			parent.content.location.href=parent.navigation[idStr]['url'];
	}
	writeNav();
}