Jquery validate (styling the errors inside table)

Demo Here

HTML

<form name="test">
<table cellspacing="1" cellpadding="1">
<tr>
<td>Name: </td>
<td><input type='text' name='Name'/>
    <span class="error_span">Enter name</span>
    </td>
</tr>
<tr>
<td>Last Name: </td>
<td><input type='text' name='LastName'/>
        <span class="error_span">Enter last name</span>
    </td>
</tr>
<tr>
<td>Address: </td>
<td><input type='text' name='Address'/>
        <span class="error_span">Enter address</span>
    </td>
</tr>
</table>
<input type='button' id='submit' name='enter' value='submit'/>
</form>

jQuery

$(document).ready(function(){
    $("#submit").click(function(){
        $('input').each(function(index) {
                   if($(this).val()=="") {
                       $(this).addClass("has_error");
                       $(this).siblings(".error_span").show();
                   }else{
                       $(this).removeClass("has_error");
                       $(this).siblings(".error_span").hide();
                   }
          });
    });
 });

CSS

.error_span{
color:red;
    display:none;
}

.has_error{
 border:1px solid red;
}

Demo Here

You can use onsubmit attribute of your form to execute the javascript and stop the form from submitting if there is validation error

You can do in Two ways..

1)

<form....>
<table cellspacing="0" cellpadding="0">
<tr>
<td>Name: </td>
<td><input type='text' name='Name'/></td>
</tr>
<tr>
<td>Last Name: </td>
<td><input type='text' name='LastName'/></td>
</tr>
<tr>
<td></td>
<td>Name Is Required</td>
</tr>
<tr>
<td>Address: </td>
<td><input type='text' name='Address'/></td>
</tr>
</table>
<input type='submit' name='enter' value='submit'/>
</form>

or

2)

<form....>
    <table cellspacing="0" cellpadding="0">
    <tr>
    <td>Name: </td>
    <td><input type='text' name='Name'/></td>
    </tr>
    <tr>
    <td>Last Name: </td>
    <td><input type='text' name='LastName'/> <br />Name Is Required</td>
    </tr>
    <tr>
    <td>Address: </td>
    <td><input type='text' name='Address'/></td>
    </tr>
    </table>
    <input type='submit' name='enter' value='submit'/>
    </form>

You have to use custom validation code for doing like that. Check this link. http://docs.jquery.com/Plugins/Validation/Validator/addMethod