function replyform(comment,postid){
var id = 'reply'+comment;
var formHTML = "<br><form name='reply" +comment+ "' id='edit' action='/comment/reply/" + comment + "' method='POST'><input type='hidden' name='commentid' value='" +comment+ "'><input type='hidden' name='postid' value='" +postid+ "'><textarea name='comment' rows='4' cols='40'></textarea><br><br><input type='submit' value='оставить комментарий'></form><br>";
if(document.getElementById(id).innerHTML==''){
    document.getElementById(id).innerHTML = formHTML;
}else{
    document.getElementById(id).innerHTML = '';
}
}