function getEmptyFrame() {if(top.tc) return top.tcmain.emptyFrame; return top.emptyFrame}
function setEmptyFrame(url) {getEmptyFrame().location.href=url}

function getMainFrame() {if(top.tc) return top.tcmain.mainFrame; return top.mainFrame}
function setMainFrame(url) {getMainFrame().location.href=url}

function getControlFrame() {return getMainFrame().controlFrame}
function setControlFrame(url) {getControlFrame().location.href=url}

function getListFrame() {return getMainFrame().listFrame}
function setListFrame(url) {getListFrame().location.href=url}

function getTermlistFrame() {return getListFrame().termlistFrame}
function setTermlistFrame(url) {getTermlistFrame().location.href=url}

function getConceptFrame() {return getMainFrame().conceptFrame}
function setConceptFrame(url) {getConceptFrame().location.href=url}

//// Edit window ////
function getTermFieldsFrame() {return getMainFrame().edit_right_frame}
function setTermFieldsFrame(url) {getTermFieldsFrame().location.href=url}

function getGeneralFieldsFrame() {return getMainFrame().edit_left_frame}
function setGeneralFieldsFrame(url) {getGeneralFieldsFrame().location.href=url}

function getEditControlFrame() {return getMainFrame().edit_bot_frame}
function setEditControlFrame(url) {getEditControlFrame().location.href=url}