Loop thru to generate checkbox

Hi,

The output should be like this:

if the user select 2008 and 2009

[ ] 2006
[ ] 2007
[ X ] 2008
[ X ] 2009

it should display on the page  

[ X ] US Direct
[ X ] MBS Direct




<script type="text/javascript">

function GetsData()
{
//debugger
var YearArray;
var YearvalueArray;
var arrCount = 0;
var arrPeriod = new Array();
var list = "|56|US Direct|2008|11|MBS Direct|2009|41|Direct|2007";

arrPeriod = list.replace(/^\|/g, '').split("|");

      var chk = document.getElementsByName('FundYear');
      YearArray = new Array();
      for (var i=0; i<chk.length; i++)
      {
            if (chk[i].checked)
            {
                  YearvalueArray = chk[i].getAttribute("value").split(",");
            }
      }
      
      
      for (i=0;i<arrPeriod.length;i++)
      {
          for (e=0;e<YearvalueArray.length;e++)
          {
        if (arrPeriod[i] == YearvalueArray[e])
                    ///////////////////////////////
                    /// My code here it only display one ChkPeriod with a value
                    /// I want it to display multiple ChkPeriod based on the user
                    /// year selection do I have to put [i] in my form1.ChkPeriod
                    /// and lblChkPeriod
                   {
                     document.form1.ChkPeriod.value = arrPeriod[i-2]
                     document.form1.ChkPeriod.title = arrPeriod[i-1]
                     document.getElementById("lblChkPeriod").innerHTML= arrPeriod[i-1]
                   }
           }
      }
      
}
</script>


 <input id="ChkPeriod" type="checkbox" value="" /><label id="lblChkPeriod" for="ChkPeriod"></label>



 <input id="FundYear" name="FundYear" type="checkbox" onpropertychange="GetsData(window.document.form1.FundYear)" value="2006/>2006

<input id="FundYear" name="FundYear" type="checkbox" onpropertychange="GetsData(window.document.form1.FundYear)" value="2007/>2007

<input id="FundYear" name="FundYear" type="checkbox"  onpropertychange="GetsData(window.document.form1.FundYear)" value="2008"/>2008

 <input id="FundYear" name="FundYear" type="checkbox" onpropertychange="GetsData(window.document.form1.FundYear)" value="2009/>2009