It seems I can not use window.createpopup in other browsers because it is not supported. the reason why I used window.createpopup is that it can pop up from one frame and show on top of another frame on the same page. I use a set of frames, so this is not possible with other types of dropdown menus. Is there anything else I can use that could achieve the same goal (ppup or dropdown from one frame and on top of another)?
edit:
I do not use iframes for frameset
this is what my frameset looks like
</head>
<frameset id="frameMain" rows="84,*" framespacing="0">
<frame src="pageHeader.html" id="mail" name="mail" frameborder="0" border="0" marginwidth="0" marginheight="0" noresize="noresize" scrolling="no"/>
<frameset id="frameSet" cols="126,*" framespacing="0">
<frame src="page2.html" id="leftnav" name="leftnav" frameborder="0" border="0" marginwidth="0" marginheight="0" noresize="noresize" scrolling="no"/>
<frame src="empty.htm" id="main" name="main" frameborder="0" border="0" noresize="noresize" scrolling="yes"/>
</frameset>
</frameset>
</html>
I want my popup menu to be in 'frameMain' and displayed in other frames, not behind them