YAHOO.namespace("example.containerN");
 
            function initNoti() {

                //control del overlay
                YAHOO.example.containerN.overlayNoti = new YAHOO.widget.Overlay("overlayNoti", { context:["zona_central_id","tl","tl"],
                    fixedcenter:true,
                    visible:false,
                    width:"550px" } );

                YAHOO.util.Event.addListener("muestranoti", "click", YAHOO.example.containerN.overlayNoti.show, YAHOO.example.containerN.overlayNoti, true);				
				YAHOO.util.Event.addListener("muestranoti", "click", muestraNoti, YAHOO.example.containerN.overlayNoti, true);
				YAHOO.util.Event.addListener("cerrarnoti", "click", YAHOO.example.containerN.overlayNoti.hide, YAHOO.example.containerN.overlayNoti, true);				
				YAHOO.util.Event.addListener("enviarnoti", "click", YAHOO.example.containerN.overlayNoti.hide, YAHOO.example.containerN.overlayNoti, true);
            }
			
			function muestraNoti(){
			
				var content = document.getElementById("overlayNoti");
				content.style.visibility = "visible";
			}
				

            YAHOO.util.Event.addListener(window, "load", initNoti);