Problem with modifying iframe in php

Hi guys,

I was trying to set the ‘src’ attribute of iframe in php using the following codes

	echo "<script type=\"text/javascript\">document.getElementById('ifrHolder').src=\"temp.html\"</script>";

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>


<body onload="reloadIframe()">
<iframe id="ifrHolder" name="ifrHolder" height="600" width="600" />

However, when I run the codes above, I was prompted with the ‘object expected’ error. Any idea what went wrong? Thanks in advance.