Intégrer un champ pièce jointe à un formulaire de contact

{if $ads_settings.show_send_mail==2 || ( $ads_settings.show_send_mail==1 && $listing.paid==1 )}
<div class="right_box_heading">{$lng.listings.email_seller}</div>

<div id="mailto_error" style="display: none;"></div>
<div id="mailto_info" style="display: none;"></div>

<div id="contact">
<ul>
<li>
<label>{$lng.contact.name}</label>
<input type="text" id="name" name="name" size="40" value="{$tmp.name}" />
</li>
<li>
<label>{$lng.contact.cv}</label>
<font color="white"><input type="file" name="cv" id="cv" value="{$tmp.cv}"/></font></li>
<li>
<label>{$lng.contact.email}</label>
<input type="text" id="email" name="email" size="40" value="{$tmp.email}" />
</li>

<li>
<label>{$lng.contact.comments}</label>
<textarea name="comments" id="comments" rows="6" cols="45">{$tmp.comments}</textarea>
</li>
</ul>

{if $settings.contact_captcha}
<br/>
<p>{$lng.users.image_verification_info}</p><br/>
<input name="number" id="number" type="text" /><br/><br/>
<img src="{$live_site}/include/random_image.php" alt="" /><br/>
{/if}
<br/>

<div class="buttons">
<button type="submit" name="ContactSeller" id="ContactSeller" class="positive">
{$lng.general.send}
</button>
</div>

<script type="text/javascript">
$(document).ready(function() {

$("#mailto_error").hide();
$("#mailto_info").hide();

$("#ContactSeller").click(function(){
var val_name = $("#name").val();
var val_email = $("#email").val();

var val_comments = $("#comments").val();
var verif = {/literal}{if $settings.contact_captcha}1{else}0{/if}{literal}
var val_number;
if(verif) val_number = $("#number").val();
else val_number = 0;
var ad_id={/literal}{$listing.id}{literal};
var id={/literal}{$listing.user_id}{literal};

$.post("{/literal}{$live_site}{literal}/mailto.php", { ContactSeller: 1, ad_id: ad_id, id: id, name: val_name, email: val_email, comments: val_comments, number: val_number }, function(data){

$("#mailto_info").hide();
$("#mailto_error").hide();
var arr = data.split("|");
var error = arr[0];
var info = arr[1];
if(info) {
$("#mailto_info").html(info);
$("#mailto_info").show();

$("#name").val('');
$("#email").val('');

$("#subject").val('');
$("#comments").val('');
if(verif) $("#number").val('');
}
if(error) {
$("#mailto_error").html(error);
$("#mailto_error").show();
}
} );

});

});
</script>
{/literal}
{/if} {* end contact form *}