I have installed zekr Quran study software in ubuntu 13.04, but it showes error

org.eclipse.swt.SWTError: No more handles [Unknown Mozilla path (MOZILLA_FIVE_HOME not set)]  

    at org.eclipse.swt.SWT.error(SWT.java:4387)

    at org.eclipse.swt.browser.Mozilla.initMozilla(Mozilla.java:1939)

    at org.eclipse.swt.browser.Mozilla.create(Mozilla.java:699)

    at org.eclipse.swt.browser.Browser.(Browser.java:99)

    at net.sf.zekr.ui.QuranForm.makeFrame(QuranForm.java:628)

    at net.sf.zekr.ui.QuranForm.init(QuranForm.java:340)

    at net.sf.zekr.ui.QuranForm.(QuranForm.java:319)

    at net.sf.zekr.ZekrMain.startZekr(ZekrMain.java:51)

    at net.sf.zekr.ZekrMain.main(ZekrMain.java:94)

then I executed the following commands

tcsh  

setenv MOZILLA_FIVE_HOME /usr/lib/firefox  

setenv LD_LIBRARY_PATH ${MOZILLA_FIVE_HOME}:${LD_LIBRARY_PATH}`

But it showes error again

LD_LIBRARY_PATH: Undefined variable.

Now what should I do? Pls help.