LoadingSample.page

<apex:page Controller="LoadingSampleCon" sidebar="false">
<apex:form>
  <apex:pageBlock title="検索結果" id="searchResult">
    <apex:pageBlockButtons location="top">
      <apex:commandButton value="検索" action="{!search}" id="searchButton" onclick="doSearch();" rerender="searchResult" />
      <apex:actionFunction name="doSearch" status="loading" action="{!search}" rerender="searchResult" />
      <apex:actionStatus id="loading">
        <apex:facet name="start">
          <apex:image url="/img/loading.gif" style="margin-left:1em;" />
        </apex:facet>
      </apex:actionStatus>
    </apex:pageBlockButtons>
    <apex:pageblockTable value="{!AccountList}" var="row" rendered="{!AccountList.size!=0}">
      <apex:column value="{!row.Name}" />
    </apex:pageblockTable>
  </apex:pageBlock>
</apex:form>
</apex:page>