圖片對(duì)話框根本就沒(méi)有顯示出來(lái)，不知道怎么回事？求解

<link rel="stylesheet" href="cikonss.css" />

<script src="jquery-ui/js/jquery-1.10.2.js"></script>

<script src="jquery-ui/js/jquery-ui-1.10.4.custom.js"></script>

<script src="jquery-ui/js/jquery-ui-1.10.4.custom.min.js"></script>

<link rel="stylesheet" href="jquery-ui/css/ui-lightness/jquery-ui-1.10.4.custom.css" ?type="text/css"/>

function showDetail(t,filename){

$("#showImg").attr("src",filename);

$("#showDetail").dialog({

?height:"auto",

? ? ?width: "auto",

? ? ?position: {my: "center", at: "center", ?collision:"fit"},

? ? ?modal:false,//是否模式對(duì)話框

? ? ?draggable:true,//是否允許拖拽

? ? ?resizable:true,//是否允許拖動(dòng)

? ? ?title:t,//對(duì)話框標(biāo)題

? ? ?show:"slide",

? ? ?hide:"explode"

});

}

<div id="showDetail" ?style="display:none"><img src="" id="showImg" alt=""/></div>

<?php

? ?//得到文件擴(kuò)展名

? ? ? $ext=strtolower(end(explode(".",$val)));

? ? ? $imageExt=array("gif","jpg","jpeg","png");

? ? ? if(in_array($ext,$imageExt)){

? ? ?>

? ? ? ? ? ?<a href="#" onclick="showDetail('<?php echo $val;?>,'<?php echo $p; ?>')"><img class="small" src="images/show.png" alt="" title="查看" /></a>|

? ?<?php

? ? ? }else{

? ??>

? ? ?<a href="index.php?act=showContent&filename=<?php echo $p;?>"><img class="small" src="images/show.png" alt="" title="查看" /></a>|

? ? <?php } ?>?