function effektNavi(obj, aktion){
  	if (document.all || document.getElementById) {
		if(aktion == 'drauf') {
			document.getElementById('zeile_1_'+obj).innerHTML = '<img src="images/navi_rad.gif" height="17" width="17" alt="Rad" border="0" />';
			document.getElementById('link_'+obj).style.textDecoration = 'underline';
			if(navigator.appVersion.indexOf('MSIE 5.5') == -1) {
				document.getElementById('link_'+obj).style.cursor = 'pointer';
				document.getElementById('zeile_1_'+obj).style.cursor = 'pointer';
				document.getElementById('zeile_2_'+obj).style.cursor = 'pointer';
				if(document.getElementById('zeile_3_'+obj))document.getElementById('zeile_3_'+obj).style.cursor = 'pointer';
			}
		}
		else if(aktion == 'runter') {
			document.getElementById('zeile_1_'+obj).innerHTML = '&raquo;';
			document.getElementById('link_'+obj).style.textDecoration = 'none';
			if(navigator.appVersion.indexOf('MSIE 5.5') == -1) {
				document.getElementById('link_'+obj).style.cursor = 'default';
				document.getElementById('zeile_1_'+obj).style.cursor = 'default';
				document.getElementById('zeile_2_'+obj).style.cursor = 'default';
				if(document.getElementById('zeile_3_'+obj))document.getElementById('zeile_3_'+obj).style.cursor = 'default';
			}
			
		}
	}
}
bild = new Array(
	'"images/ringe_1.jpg" width="180" height="124" alt="Bild 1" border="0"',
	'"images/ringe_2.jpg" width="180" height="124" alt="Bild 2" border="0"',
	'"images/ringe_3.jpg" width="180" height="124" alt="Bild 3" border="0"',
	'"images/ringe_4.jpg" width="180" height="124" alt="Bild 4" border="0"'
);
function bildnr()
{
	return (new Date()).getSeconds() % bild.length;
}

function wechselGrafik(element,grafik) {
	document.getElementById(element).src=grafik;
}