function checkSelect(){
	
	if ((document.getElementById("event_event_type_id").value == 11) || (document.getElementById("event_event_type_id").value == 13) || (document.getElementById("event_event_type_id").value == 18) ){
		document.getElementById("event_location").value = "Not Applicable"
		document.getElementById("event_location").style.fontStyle = "italic"
		document.getElementById("event_location").readOnly = true
		document.getElementById("event_postcode").value = "Not Applicable"
		document.getElementById("event_postcode").style.fontStyle = "italic"
		document.getElementById("event_postcode").readOnly = true
	}else{
		document.getElementById("event_location").readOnly = false
		if (document.getElementById("event_location").value == "Not Applicable"){
		      document.getElementById("event_location").value = ""
		}
		document.getElementById("event_location").style.fontStyle = "normal"
		
		document.getElementById("event_postcode").readOnly = false
		if (document.getElementById("event_postcode").value == "Not Applicable"){
		      document.getElementById("event_postcode").value = ""
		}
		document.getElementById("event_postcode").style.fontStyle = "normal"
	}
}