To select all the checkboxes in a gridview having multiple checkbox columns

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ASP.NET

Hi to all.In my web page i've a GridViewwith some columns.In those columns i've a Status(Is Active or Not i.e. 1 or 0 if the data value for status col is 1 then the CheckBox will be checked and if the value is 0 the CheckBox will remain unchecked) column(TemplateField) with CheckBox in ItemTemplate. Now i also have another TemplateField with CheckBoxes in HeaderTemplate(for check all functionality) and in ItemTemplate(for individual row selection purpose).I've written JavaScript for CheckAll CheckBox functionality.Now the problem is when i'm checking the CheckAll Cehckbox the Status column checkboxes are also getting checked which is wrong in my requirement.Kindly help me in this scenario.Here I'm pasting my Source Code.Please go through it.

Thanks in Advance

<script type="text/javascript" language="javascript">

function toggleCheckBoxes(gvId, isChecked) 
{

var checkboxes = getCheckBoxesFrom(document.getElementById(gvId));

for (i = 0; i <= checkboxes.length - 1; i++) {

checkboxes[i].checked = isChecked; 
}

}
function getCheckBoxesFrom(gv) 
{

var checkboxesArray = new Array(); 
var inputElements = gv.getElementsByTagName("input");
if (inputElements.length == 0) null;

for (i = 0; i <= inputElements.length -1; i++) {

if (isCheckBox(inputElements[i])) {

checkboxesArray.push(inputElements[i]); 
}

}

return checkboxesArray; 
}
function isCheckBox(element) 
{
return element.type == "checkbox"; 
}
</script>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound">
<columns>
<asp:TemplateField HeaderText="Sl.No">
<itemtemplate>
<%#Container.DataItemIndex + 1 %>
</itemtemplate>

<asp:BoundField DataField="id" HeaderText="ID" />
<asp:TemplateField HeaderText="Name">
<itemtemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("name") %>'>
</itemtemplate>
<edititemtemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("name") %>'>
</edititemtemplate>

<asp:TemplateField HeaderText="Salary">
<itemtemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("sal") %>'>
</itemtemplate>
<edititemtemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("sal") %>'>
</edititemtemplate>

<asp:TemplateField HeaderText="Status">
<itemtemplate>
<asp:CheckBox ID="chkStatus" runat="server" Checked='<%#Convert.ToBoolean(Eval("status"))%>' />
</itemtemplate>

<asp:TemplateField>
<HeaderTemplate>
<input 
type="checkbox" 
 önclick="toggleCheckBoxes('<%= GridView1.ClientID %>',this.checked)" 
id="chkAll" />
</HeaderTemplate>
<itemtemplate>
<asp:CheckBox ID="chkSingle" runat="server" />
</itemtemplate>

</columns>