function mOverBgnb(){window.document.bgnb.src ="images/button-ov-gnb.gif";}
function mOutBgnb() {window.document.bgnb.src ="images/button-gnb.gif";}

function mOverBgnm(){window.document.bgnm.src ="images/button-ov-gnm.gif";}
function mOutBgnm() {window.document.bgnm.src ="images/button-gnm.gif";}

function mOverBpop(){window.document.bpop.src ="images/button-ov-pop.gif";}
function mOutBpop() {window.document.bpop.src ="images/button-pop.gif";}