try:<script language="javascript">
var obj = document.getElementsByTagName("iframe"); //iframe ???
var len = obj.length;
for(var i=0;i<len;i++){
alert(obj[i].id);
}
</script>
var obj = document.getElementsByTagName("iframe"); //iframe ???
var len = obj.length;
for(var i=0;i<len;i++){
alert(obj[i].id);
}
</script>
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head><body>
<FRAMESET COLS="25%, 50%, *">
<FRAME id="frame1" SRC="contents.htm">
<FRAME id="frame2" SRC="info.htm">
<FRAME id="frame3" SCROLLING="NO" SRC="graphic.htm">
</FRAMESET><script language="JavaScript">
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var string="";
for (i = 0; i < document.all.length; i++) {
string+=document.all(i).tagName+":"+document.all(i).id+"<br>";
}
document.writeln(string);
for (i = 0; i < document.all.length; i++) {
if (document.all(i).tagName=="FRAME")
document.all(i).style.backgroundColor ="#FF6600";
}//-->
</script>
</body>
</html>