iframe represh

refresh an iframe in php page   <script type=”text/javascript”> var timer; function refreshIframe(){ if(timer) clearInterval(timer) timer = setTimeout(refreshIframe,5000) var iframe = document.getElementById(‘iframe’); iframe.src=’http://blog.eduguru.in’; } refreshIframe(); </script> <iframe id=”iframe” src=”http://blog.eduguru.in” width=”100%” height=”300″> <p>Your browser does not support iframes.</p> </iframe>