//FLASHプラグインによるhtmlを尅り蛍け
function MM_checkPlugin(plgIn, theURL, altURL, autoGo) {	
	var ok=false; document.MM_returnValue = false;
	with (navigator) if (appName.indexOf('Microsoft')==-1 || (plugins && plugins.length)) {
		ok=(plugins && plugins[plgIn]);
	} else if (appVersion.indexOf('3.1')==-1) { //not Netscape or Win3.1
		if (plgIn.indexOf("Flash")!=-1 && window.MM_flash!=null) ok=window.MM_flash;
		else if (plgIn.indexOf("Director")!=-1 && window.MM_dir!=null) ok=window.MM_dir;
		else ok=autoGo; }
	if (!ok) theURL=altURL; if (theURL) window.location=theURL;
}