var evt = window.event || arguments.callee.caller.arguments[0];

tried this, but not working

//event.view.selctedfeature.visibility = "hidden";

//event.view.selctedfeature.style.visibility= "hidden";

//var xyz = new esri.Graphic(pointselected.geometry, null, pointselected .attributes);
//xyz.visible = false;

Any suggestions

Thanks