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If other sites links directly the sub-pages of your site or if previous required pages are being skipped, you can now require your visitors to come from a certain page! Those that did not come from the required page are alerted then send back to the required previous page.

Add the below code to the <body> section of your page:

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		<script 
		language="javascript"
		type="text/javascript">      
		

		/* Visit http://www.yaldex.com/ 
		for full source code

		and get more free JavaScript, CSS and DHTML scripts! */

		<!-- Begin

		var 
		requiredfrom =
		"index.htm";
		//  required prev. page

		if
		(document.referrer.indexOf(requiredfrom)
		==
		-1)
		{

		alert("You 
		must come to this page from "
		+ 
		requiredfrom);

		

		//window.location=requiredfrom;  
		Uncomment this line!!!!!!!!!!!!!!

		}

		//  End -->

		</script>

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