WapegoAi vào giúp về cái này đi

<div class="phdr">Upload ảnh</div>
<div class="menu">
<button onclick="document.querySelector('#input_frm').click();return false;" id="up_info"><b>Upload ảnh bìa lên wap</b></button><input style="visibility: collapse; width: 0px;display:none" type="file" onchange="upload(this.files[0])" id="input_frm">
 
 
</div>
<script type="text/javascript">
function upload(file) {
    if (!file || !file.type.match(/image.*/)) return;
document.querySelector("#up_info").innerHTML='Đang upload ảnh..';
 
    var fd = new FormData();
    fd.append("image", file);
    var xhr =  new XMLHttpRequest()||new ActiveXObject("Microsoft.XMLHTTP")||new ActiveXObject("Msxml2.XMLHTTP");
    xhr.open("POST", "http://uploads.im/api?upload");
    xhr.onload = function() {
document.querySelector("#up_info").innerHTML='Đã upload thành công^^';
        var link = JSON.parse(xhr.responseText);
var slink=((link.data.thumb_url).replace('/t/','/d/'));
var http =  new XMLHttpRequest()||new ActiveXObject("Microsoft.XMLHTTP")||new ActiveXObject("Msxml2.XMLHTTP");
var url = "main.php?[ses]&id=ch_topic_h&uid={{form_url|split('&uid=')[1][0:6]}}";
var params = "text="+slink;
http.open("POST", url, true);
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
 
http.onreadystatechange = function() {
    if(http.readyState == 4 && http.status == 200) {
        window.location.href=window.location.href;
    }
}
http.send(params);
 
    }
    xhr.send(fd);
}
</script>
{{message_list}}