// load superceding IE .css file as needed
if (navigator.appName.indexOf("Microsoft") != -1) {
	window.document.writeln('<link rel="stylesheet" type="text/css" href="common_IE.css" title="common" />');
	
	// load superceding IE + Mac .css file as needed
	if (navigator.appVersion.indexOf("Mac") != -1) {
		window.document.writeln('<link rel="stylesheet" type="text/css" href="common_IE_Mac.css" title="common" />');
	}
}