ถ้าผมต้องการ popup ขึ้น แต่ผม echo เอาอ่ะคับมันไม่ขึ้นต้องทำไงคับ

echo "<a href='javascript:void(0);' onClick=\'window.open('editwebboard.php','','width=500,height=500'); return false;\' title='ตั้งกระทู้ใหม่'><img src= img/edit.jpg width=30 height=30></a>";

<?
	if($_SESSION['ID_User'] == $objResult['id_user'])
	{
	echo '<a href="#" onClick="window.open(\'editwebboard.php?QuestionID=<?php echo $objResult["QuestionID"];?>\',\'\',\'width=500,height=500\'); return false;" title="แก้ไขกระทู้">
	<img src= img/edit.jpg width=30 height=30></a>';
	}
	?>

<script type="text/javascript">
function popup(url,name,windowWidth,windowHeight){    
	myleft=(screen.width)?(screen.width-windowWidth)/2:100;	
	mytop=(screen.height)?(screen.height-windowHeight)/2:100;	
	properties = "width="+windowWidth+",height="+windowHeight;
	properties +=",scrollbars=no, top="+mytop+",left="+myleft;   
	window.open(url,name,properties);
}
</script>

<a href="javascript:popup('xxxxxx.php?bbb=<?=$bbb?>','',650,450)">กดดูครับผม</a>

<?
if($_SESSION['ID_User'] == $objResult['id_user']){
?>
<a href="#" onClick="window.open('editwebboard.php?ID=<?php echo $objResult["id_user"];?>' , '' , 'width=500,height=500'); 
return false;" title="ตั้งกระทู้ใหม่"><img src= img/edit.jpg width=30 height=30></a>
<?php
}
?>