few more fixes for lehonkform

views/honkform.html

@@ -1,8 +1,8 @@
 <p id="honkformhost">
-<button id="honkingtime" onclick="return showhonkform();"><a href="/newhonk">it's honking time</a></button>
+<button id="honkingtime" onclick="return showhonkform();" {{ if .IsPreview }}style="display:none"{{ end }}><a href="/newhonk">it's honking time</a></button>
 <form id="honkform" action="/honk" method="POST" enctype="multipart/form-data" {{ if not .IsPreview }}style="display: none"{{ end }}>
 <input type="hidden" name="CSRF" value="{{ .HonkCSRF }}">
-<input type="hidden" name="updatexid" value = "{{ .UpdateXID }}">
+<input type="hidden" name="updatexid" id="updatexidinput" value = "{{ .UpdateXID }}">
 <input type="hidden" name="rid" id="ridinput" value="{{ .InReplyTo }}">
 <h3>let's make some noise</h3>
 <p>

views/honkpage.js

@@ -246,6 +246,8 @@ function showhonkform(elem, rid, hname) {
 		ridinput.value = ""
 		honknoise.value = ""
 	}
+	var updateinput = document.getElementById("updatexidinput")
+	updateinput.value = ""
 	document.getElementById("honknoise").focus()
 	return false
 }