html标签处理
<xmp></xmp>原样输出标签。

<script language=javascript>
function HTMLEnCode(str)
{
var s = "";
if (str.length == 0) return "";
s = str.replace(/&/g, "&gt;");
s = s.replace(/</g, "&lt;");
s = s.replace(/>/g, "&gt;");
s = s.replace(/ /g, "&nbsp;");
s = s.replace(/\'/g, "&#39;");
s = s.replace(/\"/g, "&quot;");
s = s.replace(/\n/g, "<br/>");
return s;
}
function HTMLDeCode(str)
{
var s = "";
if (str.length == 0) return "";
s = str.replace(/&gt;/g, "&");
s = s.replace(/&lt;/g, "<");
s = s.replace(/&gt;/g, ">");
s = s.replace(/&nbsp;/g, " ");
s = s.replace(/&#39;/g, "\'");
s = s.replace(/&quot;/g, "\"");
s = s.replace(/<br/>/g, "\n");
return s;
}
</script>