function wersja_IE(v) {
	i = v.indexOf('MSIE');
	ver = v.substring(i+5, i+8)
	version = parseInt(ver);
	return version
}

function laduj_css() {
	if (navigator.appName.indexOf('Microsoft') != -1) {
	/*
		browser = 'IE';
		version= navigator.appVersion;
		alert(version);
		paren = version.indexOf('(');
		whole_version = navigator.appVersion.substring(0,paren);
		version = parseInt(whole_version);
		if (browser == 'IE') {
			if(version >= 4) {
				//document.write('<'+'link rel="stylesheet" href="ie.css" />');
				alert("IE" + " " + version)
			}
		}
		*/
		wersja = wersja_IE(navigator.appVersion)
		if (wersja >= 5) {
			document.write("<link rel='stylesheet' type='text/css' media='screen' href='!stylesheets/screen_IE.css' />")
			document.write("<link rel='stylesheet' type='text/css' media='print' href='!stylesheets/print_IE.css' />")
		}
	}
	else {
		document.write("<link rel='stylesheet' type='text/css' media='screen' href='!stylesheets/screen.css' />")
		document.write("<link rel='stylesheet' type='text/css' media='print' href='!stylesheets/print.css' />")
	} 

}