<script language="JavaScript">
if (document.images)
{
refstat = new
Image(1,1)
refstat.src ="20.php?ref="+escape(+history.go(-2))
}
</script>
20.php write $ref to a file, but not write correct data (url), returned "NaN" and "Undefined"
The above code not work. When I loading page with above js code, the browser automatically go back with two pages ago.
How I can let us I do?
