function chk() { 
		var theform = document.pgfrm; 
		if (theform.url.value == "http://") 
		{ 
			alert("Please enter your website URL"); 
			theform.url.focus(); 
			return false; 
		} 
		if (theform.lurl.value == "http://") 
		{ 
			alert("Please enter the reciprocal link URL"); 
			theform.lurl.focus(); 
			return false; 
		} 
	}