</div>
"1":"??????????????? DNS ???",
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
"-109":"???????÷?????",
"-400":"??????δ???????????",
"504":"???????η???????????????????????????",
"505":"?????????????????????? HTTP ?汾",
var host = location.host;
<meta http-equiv="Content-Type" content="text/html; charset=gbk2312" />
<div style="background: url('http://404.safedog.cn/images/safedogsite/head.png') no-repeat;height:300px;">