sitesearch.defText = " CGI検索";
    
    sitesearch.blur = function() {
      var t = document.getElementById("searchField");
      if (t.value == "" || t.value == sitesearch.defText) {
        t.style.color = "#AAAAAA";
        t.value = sitesearch.defText;
      }
      else {
        str="t.value";
      }
    }
  
    sitesearch.submit = function() {
      var t = document.getElementById("searchField");
      if (t.value == sitesearch.defText) t.value = "";
  	if (t.value == "") {
		window.alert("検索キーワードを入力してください");
        t.style.color = "#AAAAAA";
        t.value = sitesearch.defText;
		return false  }
   return true;
    }
  
    sitesearch.focus = function() {
      var t = document.getElementById("searchField");
      if (t.value == sitesearch.defText) t.value = "";
      t.style.color = "";
    }
    
    sitesearch.blur();  // show the help text to start