HTML - Html Validator

<h4 style="display:<?php print $display; ?>">

 (var i =0; i < cb.elements.length; i++)You tried to include the "<" character in your page: you should escape it as "&lt;"

<img src="themes/default/images/logo.jpg" border="0" />The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element. 

Typical values for type are type="text/css" for <style> and type="text/javascript" for <script>.

<div id="newsletter">
<p>Sign up for our newsletter</p>
<form action="http://somesite.com" method="post">
First name:  <br /><input type="text" name="firstname" /> <br />
E-mail: <br /><input type="text" name="email" />
</form>
</div>

<img src="images/coffee_bar.jpg" alt="coffee bar" class="image" align="right"/>

<table width="100%"  border="0" cellspacing="0" cellpadding="5"  class="arial1"  style="border-bottom-color:#999999; border-bottom-style:solid; border-bottom-width:1px; border-top-color:#999999; border-top-style:solid; border-top-width:1px;  border-left-color:#999999; border-left-style:solid; border-left-width:1px;   border-right-color:#999999; border-right-style:solid; border-right-width:1px;">

<form name="frmRight" method="post" action="<?php echo __HOST__?>pro_search.php">

<tr>
 <td align="center" bgcolor="#FF0000"><span class="Times2">Product Search </span></td>
</tr>

<tr>
 <td height="33" align="center"><input name="pro_search"  class="inputbox150" type="text" id="pro_search" size="20" maxlength="25" /></td>
</tr>

<tr>
 <td height="35" align="center"><input type="submit" name="Submit" value="GO"  class="button03"/></td>
</tr>

<tr>
 <td align="center"></td>
</tr>
</form>
</table>
<br>

<script type="text/javascript">
function validate_email(field,alerttxt)
{
with (field)
  {
  apos=value.indexOf("@");
  dotpos=value.lastIndexOf(".");
  if (apos<1||dotpos-apos<2)
    {alert(alerttxt);return false;}
  else {return true;}
  }
}

function validate_form(thisform)
{
with (thisform)
  {
  if (validate_email(email,"Not a valid e-mail address!")==false)
    {email.focus();return false;}
  }
}
</script>

  <form id="contacts-form" onsubmit="return validate_form(this)" action="contact.php" method="get">

                           <div class="wrapper">

                           	<div class="col-1">

                              	<label>Name:<br /><input type="text" name="name" required/></label>

                              	<label>E-mail:<br /><input type="text" name="email" required/></label>

                             </div>

                              <div class="col-2">

                              	Message:<br /><textarea cols="" name="message" required rows=""></textarea>

                                  <div class="alignright"><a href="#" onClick="document.getElementById('contacts-form').reset()" class="more"><strong>clear</strong></a>&nbsp;&nbsp;&nbsp;<a href="#" onClick="document.getElementById('contacts-form').submit()" class="more"><strong>send message</strong></a> </div>

                              </div>

                           </div>

                        </form>