function getMoreChainFans(tgt,numnodes) {
	var fanarea = tgt.parentNode.parentNode.getElementsByClassName('fanpics')[0];
	var height = parseInt(fanarea.style.height.match(/\d+/));
	var nodeid = tgt.name;
	fanarea.style.height = (height+76) + 'px'; 

	var params= Object.clone(g_ajaxparams);
	params.nodeid=nodeid;
	params.numnodes=numnodes;
	new Ajax.Request(g_ajaxpath+'ajax/waveGetAncestors.php'+g_ajaxsuffix, {
		method:'post',
		parameters: params,
		onSuccess: function(transport){ 
			var rslt=eval('('+transport.responseText+')');
			if (rslt.ok) {
				fanarea.innerHTML = fanarea.innerHTML + rslt.data;
			} 
			if (rslt.hasmore) {
				tgt.name = rslt.lastid;		
			} else {
				tgt.style.display='none';
			}
		},
		onFailure: function(){ alert('Something went wrong...') }
	});
}