I played for some time...and got the following code to work on Linux Box.
// the following Line in detect.
js
var isLinux = (sUserAgent.indexOf("Linux") > -1) && !isWin && !isMac;
// Modifying the following Line in Login.htm
if ((isMinIE5_5 && isWin) || (isMinMoz1 && isUnix)
to
if ((isMinIE5_5 && isWin) || (isMinMoz1 && (isUnix || isLinux) )
This served my purpose and it hopefully is generic for all Linux boxes irrespective of whether they are 686, 586, 486 or 86_64...etc.
thanks.
Prasad.