if ( document.images ) {
    mnu_sv_1_on = new Image(); mnu_sv_1_on.src="/common/images/mnu_sv_1_on.gif";
    mnu_sv_1_off = new Image(); mnu_sv_1_off.src="/common/images/mnu_sv_1_off.gif";
    mnu_sv_2_on = new Image(); mnu_sv_2_on.src="/common/images/mnu_sv_2_on.gif";
    mnu_sv_2_off = new Image(); mnu_sv_2_off.src="/common/images/mnu_sv_2_off.gif";
    mnu_sv_3_on = new Image(); mnu_sv_3_on.src="/common/images/mnu_sv_3_on.gif";
    mnu_sv_3_off = new Image(); mnu_sv_3_off.src="/common/images/mnu_sv_3_off.gif";
    mnu_sv_4_on = new Image(); mnu_sv_4_on.src="/common/images/mnu_sv_4_on.gif";
    mnu_sv_4_off = new Image(); mnu_sv_4_off.src="/common/images/mnu_sv_4_off.gif";
    mnu_sv_5_on = new Image(); mnu_sv_5_on.src="/common/images/mnu_sv_5_on.gif";
    mnu_sv_5_off = new Image(); mnu_sv_5_off.src="/common/images/mnu_sv_5_off.gif";
    mnu_sv_6_on = new Image(); mnu_sv_6_on.src="/common/images/mnu_sv_6_on.gif";
    mnu_sv_6_off = new Image(); mnu_sv_6_off.src="/common/images/mnu_sv_6_off.gif";
    mnu_sv_7_on = new Image(); mnu_sv_7_on.src="/common/images/mnu_sv_7_on.gif";
    mnu_sv_7_off = new Image(); mnu_sv_7_off.src="/common/images/mnu_sv_7_off.gif";
    mnu_sv_8_on = new Image(); mnu_sv_8_on.src="/common/images/mnu_sv_8_on.gif";
    mnu_sv_8_off = new Image(); mnu_sv_8_off.src="/common/images/mnu_sv_8_off.gif";
}