รันบน ie8 และ ie9 ไม่ได้ครับ ie10,chrome,ff ปกติครับ

<a href="javascript:open_new_window('formuploadadd.php?user_id=<?=$id_user?>')" ><img src="img/attact1.png" alt="" border="1" width="80" height="25" style="border-color=red;"></a>
<script language="JavaScript">
<!-- 
function open_new_window(url)
{ 
var textfield = document.getElementById('work_title').value;
var textfield2 = document.getElementById('work_detail').value;
var textfield3 = document.getElementById('datestop').value;
url += '&work_title='+textfield+'&work_detail='+textfield2+'&datestop='+textfield3;
new_window = window.open(url,'window_name','toolbar=0,menubar=0,resizable=0,dependent=0,status=0,width=500,height=400,left=25,top=25')
}
</script>