function wordblur() {
  var obj = document.getElementById('wordinput');
  if(obj.value=='' || obj.value==tip) {
    obj.value=tip;
    obj.style.color='#cccccc';
    frmMainSearch.word.value='';
  } else {
    frmMainSearch.word.value=obj.value;
  }
}
function wordfocus() {
  var obj = document.getElementById('wordinput');
  if(obj.value==tip) {
    obj.value='';
    obj.style.color='#333333';
  }
}