function resize(a, b) {
		parent.window.resizeTo(a,b);		
}

function change (id) {
	// hide text	
	document.getElementById('ntag_text_ueberuns').style.display = 'none';
	document.getElementById('ntag_text_forum').style.display = 'none';
	document.getElementById('ntag_text_news').style.display = 'none';
	document.getElementById('ntag_text_market').style.display = 'none';
	document.getElementById('ntag_text_events').style.display = 'none';
	document.getElementById('ntag_text_service').style.display = 'none';
	document.getElementById('ntag_text_clear').style.display = 'none';
	
	// show div by id
    current = (document.getElementById('ntag_text_' + id).style.display == 'none') ? 'block' : 'none';
    document.getElementById('ntag_text_' + id).style.display = current;
    
	// deactivation	
	document.images['ntag_image_news'].src="/pics/navi/ntag_jNews_ia.GIF"; 
	document.images['ntag_image_ueberuns'].src="/pics/navi/ntag_jUeberUns_ia.GIF"; 
	document.images['ntag_image_market'].src="/pics/navi/ntag_jMarktplatz_ia.GIF";
	document.images['ntag_image_forum'].src="/pics/navi/ntag_jForum_ia.GIF"; 
	document.images['ntag_image_events'].src="/pics/navi/ntag_jEvents_ia.GIF";
	document.images['ntag_image_service'].src="/pics/navi/ntag_jServices_ia.GIF";
	
	//document.images['ntag_image_xxx'].src="pics/navi/ntag_jNews_ia.GIF"; 
	
	// activation   
	if (id == 'news') { document.images['ntag_image_news'].src="/pics/navi/ntag_jNews.GIF"; }
	if (id == 'ueberuns') { document.images['ntag_image_ueberuns'].src="/pics/navi/ntag_jUeberUns.GIF"; }
	if (id == 'market') { document.images['ntag_image_market'].src="/pics/navi/ntag_jMarktplatz.GIF"; }
	if (id == 'forum') { document.images['ntag_image_forum'].src="/pics/navi/ntag_jForum.GIF"; }
	if (id == 'events') { document.images['ntag_image_events'].src="/pics/navi/ntag_jEvents.GIF"; }
	if (id == 'service') { document.images['ntag_image_service'].src="/pics/navi/ntag_jServices.GIF"; }
	
	//if (id == 'xxx') { document.images['ntag_image_xxx'].src="pics/navi/ntag_jNews.GIF"; }
}