// Determine & load proper style sheet

if	( (navigator.userAgent.indexOf("Gecko")!=-1) || (navigator.userAgent.toLowerCase().indexOf("msie") !=-1) )	
		document.write("<LINK REL='stylesheet' TYPE='text/css' HREF='http://www.hcporter.com/common/code/style_sheets/default_styles.css'>"); 
else if (navigator.appVersion.indexOf("Mac")!=-1)	
		document.write("<LINK REL='stylesheet' TYPE='text/css' HREF='http://www.hcporter.com/common/code/style_sheets/macNN_styles.css'>"); 
else												
		document.write("<LINK REL='stylesheet' TYPE='text/css' HREF='http://www.hcporter.com/common/code/style_sheets/default_styles.css'>");