var version = navigator.appVersion;
version = version.substring(0,1);
var browser = navigator.appName;
var flsh = 0;

if (browser =="Netscape" && version >= "3"){
	for(i = 0; i < navigator.mimeTypes.length; i++) {
		if(navigator.mimeTypes[i].type == "application/x-shockwave-flash"){
		flsh = 1;
		}
	}
//プラグインあるかないか
	if (flsh == 0) {
		if(document.getElementByID) {
			window.location="index_noflash.html";
		}
		else {
			window.location="index_n4.html";
		}
	}
}