Rewriting the Element's Content

My Test Title

  <script language="JavaScript">
    function RunScript(){ 
      document.getElementById("myh2").innerText = "Red";  
    }
    function RunScript2(){ 
      document.getElementById("myh2").innerText = "Yellow";  
    }
  </script>
  <h2 id="myh2">My Test Title</h2>
  <p><input onClick="RunScript()"  
          type="button" value="Change Title to Red"> 
     <input onClick="RunScript2()"
          type="button" value="Change Title to Yellow">
  </p>