Watermarked TextBox without using Ajax or javascript

<tr>

    <td><input id="member_first_name"  runat="server" type="text" class="input_text" value="Name" onfocus="if(this.value=='Name'){ this.value=''; }" onblur="if(this.value==''){ this.value='Name'; }" size="20" style="width:170px;" /></td>

  </tr>

  <tr>

    <td><input id="member_email"  runat="server"  type="text" class="input_text" onfocus="if(this.value=='Email Address'){ this.value=''; }" onblur="if(this.value==''){ this.value='Email Address'; }" value="Email Address" size="20" style="width:170px;" /></td>

  </tr>

  <tr>

    <td><input id="contact_no"  runat="server"  type="text" class="input_text" onfocus="if(this.value=='Contact No'){ this.value=''; }" onblur="if(this.value==''){ this.value='Contact No'; }" value="Contact No" size="20" style="width:170px;" /></td>

  </tr>

  <tr>

    <td><label>

      <textarea name="comments" runat="server"  id="textarea" class="input_textarea" cols="25" rows="5" onfocus="if(this.value=='Enter your query here'){ this.value=''; }" onblur="if(this.value==''){ this.value='Enter your query here'; }" style="width:170px;">Enter your query here</textarea>

    </label></td>

  </tr>