function checkAllFields(ref,elid,elname,formid)

{

var chkAll = document.getElementById(elid);

var checks = document.getElementsByName(elname);

var boxLength = checks.length;

var allChecked = false;

var totalChecked = 0;

	if ( ref == 1 )

	{

		if ( chkAll.checked == true )

		{

			for ( i=0; i < boxLength; i++ )

			{

			checks[i].checked = false;

			}

			checks[0].checked = true;

		}

		else

		{

			checks[0].checked = true;

		}

	}

	else

	{

		for ( i=0; i < boxLength; i++ )

		{

			if ( checks[i].checked == true )

			{

			allChecked = true;

			continue;

			}

			else

			{

			allChecked = false;

			break;

			}

		}

		if ( allChecked == true )

		chkAll.checked = true;

		else

		chkAll.checked = false;

	}

	eval( "document.getElementById('" + formid + "').submit();" )

}