function SelectAllCheckBox(form_id, elements_name, control_checkbox_id)
{ 
	var checkbox_handle = document.getElementById(control_checkbox_id);
	for (i = 0; i < document.forms[form_id].elements.length; i++)
	{
         var item = document.forms[form_id].elements[i];
	     if (item.name == elements_name) 
	     {
		     item.checked = checkbox_handle.checked;
		 }
	}
	 return;
}
function SelectCheckBox(control_checkbox_id)
{
	var checkbox_handle = document.getElementById(control_checkbox_id);
	checkbox_handle.checked = false;
	return;
}