■スクリプト
<HTML> <HEAD> <TITLE>Sample</TITLE> </HEAD> <BODY bgColor="white"> <CENTER> <H1>拡張子を返します</H1> </CENTER> <TABLE BORDER="1"> <SCRIPT Language="JavaScript"> <!-- for(i = 0; i < navigator.mimeTypes.length; i++) alert("[",i,"]",navigator.mimeTypes[i].suffixes); // --> </SCRIPT> </TABLE> </BODY></HTML>