function css_select() {
	//Here we define different css files for different browsers, should 
	//they need something besides the default.

	//Define where the css files live
	var css_url = 'http://www.iastate.edu/~cac/web-content/css/';

	//For IE6
	//Tested: IE6 on Windows
	if(is_ie6up) {
	document.write("<link rel='stylesheet' type='text/css' href='"+css_url+"alt_ie6.css' media='all'/>");
	return;
	}

	
	//For IE5 Mac
	//if(is_ie && is_mac) {
	//document.write("<link rel='stylesheet' type='text/css' href='/css/ie_mac.css' media='all'/>");
	//return;
	//}
	
	//For Mozilla browsers using gecko
	//Tested: Firefox 1.0.6
	//if(is_gecko && !is_nav) {
	//document.write("<link rel='stylesheet' type='text/css' href='/css/gecko.css' media='all'/>");
	//return;
	//}
	
	//For Opera
	//Tested: Opera 8.0.2
	//if(is_opera) {
	//document.write("<link rel='stylesheet' type='text/css' href='/css/opera.css' media='all'/>");
	//return;
	//}
	
	//For Netscape broswers using gecko
	//Tested: Netscape 7.2.0
	//if(is_gecko && is_nav) {
	//document.write("<link rel='stylesheet' type='text/css' href='/css/nav_gecko.css' media='all'/>");
	//return;
	//}
}