hello every one..query related to linux mozilla fire fox

hello every one, i m new to this google groups..pls help me out in this
issue

i have a file where it works in WINDOWS mozilla firefox but not working
in LINUX mozilla firefox.the file contains JAVA script.
Description: i have a link where i should get the version name of the
server.
the link should open with ALT + mouse click.it should display server
version.
so, pls help me out what exactly java script i need to use to work in
LINUX mozilla also..

// for windows..
function _HPEPSymbolClick(e, anchorTagObject) {
if(ie4){
if (window.event.altKey) {
alert("Banner Server Name: " + g_BannerServerName + "\n Banner
Version: " + g_Build);
//anchorTagObject.href = goHPEP.libPath + "release_notes.htm";
}
}
else
// for LINUX
{
if ( e.altKey ){
alert("Banner Server Name: " + g_BannerServerName + "\n Banner
Version: " + g_Build);
//_HPEPNewLocation( goHPEP.libPath + "release_notes.htm");
}
}
}

do u think if(e.altKey) for linux is right in my code..pls post ur
suggestions on this issue as soon as possible..