function IsEmpty(aTextField) {
   if ((aTextField.value.length==0) ||
   (aTextField.value==null)) {
      return true;
   }
   else { return false; }
}

function clearTXT(txtField , stdString)
{
	if(!IsEmpty(txtField) && txtField.value == stdString){
		txtField.value = '';
	}
}

function addTXT(txtField , stdString)
{
	if(IsEmpty(txtField)){
		txtField.value = stdString;
	}
}

function close_promo_div()
{
	$.cookie('mettasense_promo_box_div_closed', '1', { expires: 7, path: '/' });
	$('#promo').hide();
}