function popupPage(seite, name, w, h, scroll) {
	var l=screen.width/2-w/2;
	var t=screen.height/2-h/2;
	var windowprops = "location=no,scrollbars=" + scroll + ",menubars=no,toolbars=no,resizable=no,width=" + w + ",height=" + h + ",left=" + l + ",top=" + t;
	popup = window.open(seite,name,windowprops);
}

function changePage(newLoc) {
	nextPage = newLoc.options[newLoc.selectedIndex].value
	
	if (nextPage != "") {
	  document.location.href = nextPage
	}
}

function getObj(name) {
	if (document.getElementById) {
		return document.getElementById(name);
	}
	else if (document.all) {
		return document.all[name];
	}
	else if (document.layers) {
		return document.layers[name];
	}
}

function hide(name) {
	var div = getObj(name);
	div.style.display='none';
}

function show(name) {
	var div = getObj(name);
	div.style.display='block';
}

function toggle(name) {
	var div = getObj(name);
	if (div.style.display=='none') {
		div.style.display='block';
	} else {
		div.style.display='none';
	}
}

function sitemap() {
	var div = getObj("sitemap");
	if (div.style.display=='none') {
		div.style.display='block';
		siteicon("sitemap");
	} else {
		div.style.display='none';
		siteicon("site");
	}
}

function siteicon(action) {
	var div = getObj("siteicon");
	if (action=='site') {
		div.src='img/sitemap.gif';
		div.alt='Sitemap anzeigen';		
	} else {
		div.src='img/site.gif';
		div.alt='Seite anzeigen';
	}	
}

function rahmen(leftx,topx) {
	var div = getObj("rahmen");
	div.style.left = leftx;
	div.style.top = topx;	
}