哪位写代码的朋友帮看看。下面这段为幻灯片代码。如何弹出新窗口呢？
<SCRIPT>
var widths=320;
var heights=213;
var counts=4;
img1=new Image ();img1.src='images/hdp_a.gif';
img2=new Image ();img2.src='images/hdp_b.gif';
img3=new Image ();img3.src='images/hdp_c.gif';
img4=new Image ();img4.src='images/hdp_d.gif';
url1=new Image ();url1.src=' http://www.qingdaoculture.com/violin9/2009/1021/1536.html';
url2=new Image ();url2.src=' http://www.qingdaoculture.com/violin9/2009/1021/1537.html';
url3=new Image ();url3.src=' http://www.qingdaoculture.com/violin9/2009/1021/1538.html';
url4=new Image ();url4.src=' http://www.qingdaoculture.com/violin9/2009/1021/1535.html';
//天极伊永恒原创
var nn=1;
var key=0;
function change_img()
{if(key==0){key=1;}
else if(document.all)
{document.getElementById("pic").filters[0].Apply();document.getElementById("pic").filters[0].Play(duration=2);}
eval('document.getElementById("pic").src=img'+nn+'.src');
eval('document.getElementById("url").href=url'+nn+'.src');
for (var i=1;i <=counts;i++){document.getElementById("xxjdjj"+i).className='axx';}
document.getElementById("xxjdjj"+nn).className='bxx';
nn++;if(nn>counts){nn=1;}
tt=setTimeout('change_img()',4000);}
function changeimg(n){nn=n;window.clearInterval(tt);change_img();}
document.write(' <style>');
document.write('.axx{padding:1px 7px;border-left:#cccccc 1px solid;}');
document.write('a.axx:link,a.axx:visited{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#666;}');
document.write('a.axx:active,a.axx:hover{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#999;}');
document.write('.bxx{padding:1px 7px;border-left:#cccccc 1px solid;}');
document.write('a.bxx:link,a.bxx:visited{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#D34600;}');
document.write('a.bxx:active,a.bxx:hover{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#D34600;}');
document.write(' </style>');
document.write(' <div +widths+'px;height:'+heights+'px;overflow:hidden;text-overflow:clip;">');
document.write(' <div> <a id="url"> <img id="pic" width='+widths+' height='+heights+' /> </a> </div>');
document.write(' <div >');
for(var i=1;i <counts+1;i++){document.write(' <a href="javascript:changeimg('+i+');" id="xxjdjj'+i+'" class="axx" target="_self">'+i+' </a>');}
document.write(' </div> </div>');
change_img();
</SCRIPT>