google suggest 的问题: 输入提醒后, span为什么隐藏不了呢
代码两部分: 
 第一部分,页面: 
  <html   xmlns= "http://www.w3.org/1999/xhtml "   >  
  <head   runat= "server ">  
              <title> Untitled   Page </title>    
              <link   href= "style.css "   rel= "stylesheet "   type= "text/css "   />    
  <script   src= "build.js "   type= "text/javascript "   language= "javascript ">  </script>  
  </head>    
  </head>  
  <body   onResize= "ReDraw() ">           <!—定义网页窗口大小发生变化的时候调用ReDraw()函数   -->  
  <div   align= "center ">  
              <form   id= "Form1 "   AUTOCOMPLETE= "off "      runat= "server ">        <!—定义表单   -->  
 AutoComplete   Text   Box:    <input   type= "text "   name= "txtUserInput "/>           <!—定义文本输入框   -->  
  <input   type= "hidden "   name= "txtUserValue "   ID= "hidden1 "   />           <!—定义隐藏域   -->  
  <input   type= "text "   name= "txtIgnore "   style= "display:none "   />           <!—定义辅助的文本输入框   -->  
  </form>  
  </div>  
  </body>  
  </html>  
------解决方案--------------------document.getElementById( "spanOutput ").style.display =  "none "; 
 改成 
 document.getElementById( "spanOutput ").innerHTML =  " ";