function eFocus(field){
  if (field.value == field.defaultValue){
    field.value ='';
  }
  field.className="notblur";
}

function eBlur(field){
  if (field.value == ''){
    field.value = field.defaultValue;
    field.className="onblur";
  }else{
    field.className="notblur";
  }
}