//test platform first
if (is_win) {
	//include the main style sheet
	
	//include supplemental style sheets as necessary for different browser configurations; these should combine with styles already defined in main style sheets
	if(is_nav4) {
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_ssp_NS4.css"  rel="stylesheet"> ');
		document.write('<link href="http://ssp.georgetown.edu/style_main_print.css" rel="stylesheet" media="print">');
		}
		
	else if(is_nav6up){
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_ssp_NS6.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main_print.css" rel="stylesheet" media="print">');		
	}	
		
	else if(is_ie6up){
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_ssp_IE6.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main_print.css" rel="stylesheet" media="print">');
	}
	else {
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main_print.css" rel="stylesheet" media="print">');
	}
}
else if (is_mac) {
	if(is_ie5up) {	
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu//style_ssp_IE5up-mac.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main_print.css" rel="stylesheet" media="print">');
	}
	else if (is_nav6up){
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_ssp_NS6up-mac.css" rel="stylesheet">');	
		document.write('<link href="http://ssp.georgetown.edu/style_main_print.css" rel="stylesheet" media="print">');
}
	else {
		document.write('<link href="http://ssp.georgetown.edu/common.css" rel="stylesheet">');
		document.write('<link href="http://ssp.georgetown.edu/style_main.css" rel="stylesheet">');
	}

}