I would like to create a link using the value of get.value() method when the object is an Id.  I have a working solution but wonder if there is another I'm missing.  Here is the code:

This is what I would like:
<apex:repeat value="{!reportResults.factMap['T!T'].rows}" var="row" >
  <tr>
  <apex:repeat value="{!row.dataCells}" var="cell">
    <td>
      <apex:outputText value="{!cell.label}" rendered=“{!IF VALUE NOT AN ID}”/>
      <apex:outputLink value="/{!cell.value}”rendered=“{!IF VALUE IS AN ID}”/>
         {!cell.label
      </apex:outputLink>

The code below works but is there a better solution?

VP Page
<apex:variable value="{!0}" var="cnt"/>
<apex:repeat value="{!reportResults.factMap['T!T'].rows}" var="row" >
  <tr>
  <apex:repeat value="{!row.dataCells}" var="cell">
    <td>
      <apex:outputText value="{!cell.label}" rendered="{!AND(cnt<listIds.size,listIds[cnt]='BLANK')}"/>
      <apex:outputLink value="/{!listIds[cnt]}"
        rendered="{!AND(cnt<listIds.size,listIds[cnt]!='BLANK')}">
        {!cell.label}
      </apex:outputLink>
    </td>
    <apex:variable value="{!cnt+1}" var="cnt"/>

Controller:
for (Reports.ReportDetailRow rd : factDetails.getRows())
{             
  for (Reports.ReportDataCell cd : rd.getDataCells())
  {
     listIds.add('BLANK');
     if (cd.getValue() instanceOf Id)
       listIds[listIds.size()-1] = (String)cd.getValue();    
  }
}

Thanks