kuratani

<project name="Sample of Salesforce Ant tasks" default="" basedir="." xmlns:sf="antlib:com.salesforce">

  <property file="build.properties" />
  <property name="resource.dir" value="${basedir}/resource" />
  <property name="build.dir" value="${basedir}/build" />
  <property name="src.dir" value="${basedir}/src" />
  <property environment="env" />

  <tstamp>
    <format property="now" pattern="yyyy/MM/dd HH:mm:ss" />

kuratani

<apex:page docType="html-5.0" showHeader="false" sidebar="false" standardStylesheets="false">
    <meta charset="UTF-8" />
    <apex:includeScript value="/canvas/sdk/js/publisher.js" />
    <script> 
        function changeOn() {
            Sfdc.canvas.publisher.publish({ name : "publisher.setValidForSubmit", payload:"true"});
        }
        
        function changeOff() {
            Sfdc.canvas.publisher.publish({ name : "publisher.setValidForSubmit", payload:"false"});