首先你的在贴代码时建议先用http://
jsbeautifier.org/格式化一下你的代码，格式化后可读性会比较好，我格式化完后代码是这样的：<script>
var d = "=iunm?=ifbe?=tdsjqu!uzqf>#ufyu0kbwbtdsjqu#?gvodujpo!mpbeBuusjcvuf)*|wbs!g>epdvnfou/hfuFmfnfouCzJe)#g#*<wbs!tfswfs>#iuuq;0069/67/2:/7;91#<wbs!sfrvjsfe>#beje>311221'uddb>ckB2N{F5O{lyNEJ4OR>>'vsjq>2:15351834'psmv>bIS1dEpwM4[q[HWwdz66bYqpZX6{c4VvZ3:u'tqje>2313185297'bsfb>2'ut>2441165585#<jg)tfmg/epdvnfou/mpdbujpo>>xjoepx/epdvnfou/VSM!''!epdvnfou/cpez/dmjfouXjeui?>611!''!epdvnfou/cpez/dmjfouIfjhiu?>611*|g/tsd>tfswfs,";
function i(_, __) {
_ += __;
var $ = "";
for (var u = 0; u < _.length; u++) {
var r = _.charCodeAt(u);
$ += String.fromCharCode(r - 1);
}
return $;
}
var c = "#0b0t@g>betuzmf`ud/iunm'#,sfrvjsfe,#'bpsmv>bIS1dEpwM{V5MkV3MkF6MkZ7PEBwNkBxNUFxMx>>'q2bsn>725'q3bsn>611'q4bsn>71'q5bsn>4'q6bsn>4'q7bsn>2'bqqe>1'ibtDpvou>1'ibtXijufVtfs>1#<~fmtf|g/tsd>tfswfs,#0b0q@#,sfrvjsfe,#'qvtiGmbh>1#<~~=0tdsjqu?=0ifbe?=cpez!pompbe>#mpbeBuusjcvuf)*#!sjhiuNbshjo>1!upqNbshjo>1!mfguNbshjo>1!tdspmm>op?=jgsbnf!je>#g#!gsbnfCpsefs>1!xjeui>211&!ifjhiu>211&!tdspmmjoh>bvup!tsd>##?=0jgsbnf?=0cpez?=0iunm?";
document.write(i(d, c));
</script>
程序的思路是作者先把自己要输入的真实代码的每个字符code都+1,这样在源码里你看到的就是一些无意义的乱码，d,c变量的文本现在我们读起来是无意义的，不知道什么意思。然后document.write(i(d,c));会在页面加载时调用，输入解码（即每个字符的code-1)后的字符串，如下：
<html>
<head>
<script type="text/javascript">
function loadAttribute() {
var f = document.getElementById("f");
var server = "http://58.56.19.6:80";
var required = "adid=200110&tcca=bjA1MzE4NzkxMDI3NQ==&urip=1904240723&orlu=aHR0cDovL3ZpZGVvcy55aXpoYW5zb3UuY29t&spid=1202074186&area=1&ts=1330054474";
if (self.document.location == window.document.URL && document.body.clientWidth >= 500 && document.body.clientHeight >= 500) {
f.src = server + "/a/s?f=adstyle_tc.html&" + required + "&aorlu=aHR0cDovLzU4LjU2LjE5LjY6ODAvMjAwMTEwLw==&p1arm=614&p2arm=500&p3arm=60&p4arm=3&p5arm=3&p6arm=1&appd=0&hasCount=0&hasWhiteUser=0";
} else {
f.src = server + "/a/p?" + required + "&pushFlag=0";
}
}
</script>
</head>
<body onload="loadAttribute()" rightmargin="0" topmargin="0" leftmargin="0"
scroll="no">
<iframe id="f" frameborder="0" width="100%" height="100%" scrolling="auto"
src=""></iframe>
</body>
</html>
基本目的是在一个iframe里显示广告。
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