Script:

<apex:includeScript value="{!$Resource.jQuery}"/>

$j = jQuery.noConflict();
$j(document).ready(function() {

// CheckBox Select
var selectedChkbox;

$j("[id$=':type4check']").each(function (index, domEle) {
if ($j(this).attr('checked')) selectedChkbox = $j(this).attr('id');
});
$j("[id$=':type4check']").click(function(event){
if($j(this).attr('checked')){
if ($j(this).attr('id') != selectedChkbox) {
//$j(selectedChkbox).removeAttr('checked');
document.getElementById(selectedChkbox).checked=false;
}
selectedChkbox = $j(this).attr('id');
// Call Action Script
refreshActUsrList();
} else {
event.preventDefault();
}
});
});

ページ:

<apex:pageBlockTable value="{!xxxList}" var="ret" style="width:100%" id="typeBlock">
<apex:column >
<apex:facet name="header"></apex:facet>
<apex:inputCheckBox value="{!xxxx}" id="type4check"/>
</apex:column>
<apex:column >
<apex:facet name="header"><apex:outputText value="xxxxx"
styleClass="labelCol" /></apex:facet>
<apex:outputText value="{!ret.cnt.fieldzzz}" styleClass="labelCol" />
</apex:column>
<apex:column >
<apex:facet name="header"><apex:outputText value="xxxxxx"
styleClass="labelCol" /></apex:facet>
<apex:inputField value="{!ret.cnt.fieldxxx}" />
</apex:column>
</apex:pageBlockTable>