browserName = navigator.appName;browserVer = parseInt(navigator.appVersion);browserOs = navigator.platform;// Browser,Ver dispatchnn3up = (browserName == "Netscape" && (browserVer >= 3 && browserVer <= 4));ie4up = (browserName.indexOf("Microsoft") >= 0 && browserVer >= 4);nn6   = (browserName == "Netscape" && browserVer >= 5);if(navigator.appVersion.indexOf("Mac") > 1){	if(ie4up){				// Mac IE	document.write("<link rel='stylesheet' type='text/css' href='css/mac.css'>");		}		else if(nn6){				// MacNN6	document.write("<link rel='stylesheet' type='text/css' href='css/mac.css'>");	}		else if(nn3up){				// Mac NN Lower Ver.	document.write("<link rel='stylesheet' type='text/css' href='css/mac_nn.css'>");		}	else {			// Mac OTHERS.	document.write("<link rel='stylesheet' type='text/css' href='css/mac_other.css'>");		}}else if (navigator.appVersion.indexOf("Win") > 1) {	if(nn3up){			// WIN NN Lower Ver.	document.write("<link rel='stylesheet' type='text/css' href='css/win_nn.css'>");		}	else {			// WIN OTHERS.	document.write("<link rel='stylesheet' type='text/css' href='css/win.css'>");		}}else {	document.write("<link rel='stylesheet' type='text/css' href='css/win.css'>");}