If yuo want it to pass validation, remove the name attribute from the form element:
<form action="" method="post" name="emailContact" id="emailContact" onsubmit="">
to:
<form action="" method="post" id="emailContact" onsubmit="">
and add the rows and cols attribute to the text area tag:
<textarea name="Comments" class="inputText" id="Comments" onblur="if (document.getElementById('commentsServerError')) document.getElementById('commentsServerError').style.display='none'" ><?php echo(ValidatedField("contact","Comments")) ?></textarea>
to:
<textarea name="Comments" cols="30" rows="8" class="inputText" id="Comments" onblur="if (document.getElementById('commentsServerError')) document.getElementById('commentsServerError').style.display='none'" ><?php echo(ValidatedField("contact","Comments")) ?></textarea>