function checkMail(addr)
{
    // Tests email address for valid syntax, returns TRUE if not valid //
    var filter  =
/^([a-zA-Z0-9_\.\-])+([a-zA-Z0-9])\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
        if (filter.test(addr)) return false;
        else return true;
}

function getRadioButtonValue (radio)
{  var result = ""; 
   for (var i = 0; i < radio.length; i++) {   
          if (radio[i].checked) {
                        result =  radio[i].value;
                        break 
          }
    }
    return result
}

function clearDefault(el) {

	if (el.defaultValue==el.value) el.value = ""
		
}

function CSURLPopupShow(formName, popupName, target) {
        var popup = document[formName].elements[popupName];
        window.open(popup.options[popup.selectedIndex].value, target);
        popup.selectedIndex = 0;
}