var searchFieldDefaultText = "搜尋...";

function searchKeywordFieldChange(event){
  if(event.target.value != searchFieldDefaultText){
    event.target.removeClass('out_focus');
  }else{
    event.target.addClass('out_focus');
  }
}

function searchKeywordFieldFocus(event){
  if(event.target.value == searchFieldDefaultText)
    event.target.value = "";
  searchKeywordFieldChange(event);
}

function searchKeywordFieldBlur(event){
  if(event.target.value == "")
    event.target.value = searchFieldDefaultText;
  searchKeywordFieldChange(event);
}

window.addEvent('domready', function(){

  if($('searchKeywordField')){
	  $('searchKeywordField').addEvents({
		'change': searchKeywordFieldChange,
		'focus': searchKeywordFieldFocus,
		'blur': searchKeywordFieldBlur
	  });
	  $('searchKeywordField').fireEvent('blur', {target: $('searchKeywordField')});
  }
});