PHP Code:
<script type="text/javascript">
function check()
{
var giframe = document.getElementsByTagName("iframe");
var bod = document.getElementsByTagName("body");
var blocked=1;
for (var i = 0; i < giframe.length; i++)
{
var name = giframe[i].getAttribute("name");
if(name == "google_ads_frame" && giframe[i].style.display != 'none')
{
var blocked=0;
}
}
if (blocked) {
bod[0].innerHTML = '<br> <br><p align="center"><font color="red" size="+6" style="font-size:5em"><strong>WARNING!</strong></font><br /><br /><font color="#ffffff" face="Arial"><b>An ad blocking software has been detected. <br /><br />This site is supported only by contextual ads, <br /><br />so we ask you to whitelist this site or disable the ad blocking software completely. <br /><br /> Thank you.<br /><br />When you are done, you may click <a href="">Continue</a></font></b></p>';
}
}
setTimeout('check()', 2000);
</script>
</head>