Need to set rich:simpleTogglePanel open=false after clicked command button
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Need to set  rich:simpleTogglePanel open=false after clicked command button 
below is my command button coding ,what should i do to change my simpleTogglePanel open=false after clicked this command button

    <a4j:commandButton value="Search" status="waitSearchStatusSO" 
						id="soSearchBtn"
						reRender="soSearchResultsPanel,soErroMessages,searchSoKey"
						action="#{soSearchAction.processAction}"
						onmouseover="this.style.color='#d30100'"
						onmouseout="this.style.color='#ffffff'"
						onclick="javascript:validateSOsearch();"
						oncomplete="javascript:Richfaces.hideModalPanel('processpanel');"
						styleClass="btnBackground"
						disabled="#{ viewScope.soform.waveSoExistFlag == 'false' ?false: !viewScope.soform.searchAccess}" />

