gistfile1.txt

{
  leaf: true, 
  text: gxp.plugins.Legend.prototype.tooltip, 
  checked: true, 
  iconCls: "gxp-icon-legend",
  ptype: "gxp_legend",
  outputConfig: {
    filter: function(rec) {
 		if (record.get("title").indexOf("Europa -hvit bakgrunn") != -1) {
 			alert("filter in outputConfig");
 			return false;
 		} else if ( record.get("title").indexOf("Europa") != -1) {
 			return false;
 		}
 		return true;
    }
 }