function set_active_element(elem,value,image)
{
	document.getElementById(elem).value=value;
	document.getElementById('iframe').src=image;
	
	var active_id = document.getElementById('iframelink_aktiv').value;
	var active_link = document.getElementById('linktarget_'+active_id).value;
	var i=1;
	for (i=1;i<=7;i++)
	{
		if (i == active_id)
			document.getElementById('iframelink_'+i).className='on';
		else
			document.getElementById('iframelink_'+i).className='ohne';
	}
	document.getElementById("iframe_target").href = active_link;
}