function browserRedirect()   {   <!-- browser redirect function
	var ns4 = document.layers;
	var ns6 = document.getElementById && !document.all;
	var ie4 = document.all;
  
	if(ns4) URLStr = "1.html";

	else if(ns6) URLStr = "2.html";

	else if(ie4) URLStr = "3.html";
	
	else URLStr = "4.html";
  		location = "http://www4.ncsu.edu/~jbmyatt/";
		
}  <!-- end function