rdPavel,
<form name="mainform" id="mainform" class="form_step" action="<?php echo appthemes_get_step_url(); ?>" method="post" enctype="multipart/form-data">
<?php wp_nonce_field( $action ); ?>
<ol>
<span class="form-fields">
<li>
<div class="labelwrapper"><label><?php _e( 'Category', APP_TD ); ?></label></div>
<div class="ad-static-field"><strong><?php echo $category->name; ?></strong> <small><a href="<?php echo $select_category_url; ?>"><?php _e( '(change)', APP_TD ); ?></a></small></div>
</li>
<?php
ob_start();
cp_show_form( $category->term_id, $listing );
$select=ob_get_contents();
ob_end_clean();
$select=str_replace('<select ','<select onchange="CityList(this);" ',$select);
echo $select;
?>
</span>
<center><p class="btn1">
<input type="submit" name="step1" id="step1" class="btn_orange" value="<?php _e( 'Continue ››', APP_TD ); ?>" / >
</p></center>
</ol>
<input type="hidden" name="action" value="<?php echo esc_attr( $action ); ?>" />
<input type="hidden" name="ID" value="<?php echo esc_attr( $listing->ID ); ?>" />