var oHomeOn = new Image();
oHomeOn.src = '/templates/images/topnav/home_on.jpg';
var oHomeOff = new Image();
oHomeOff.src = '/templates/images/topnav/home_off.jpg';

var oNewsOn = new Image();
oNewsOn.src = '/templates/images/topnav/news_on.jpg';
var oNewsOff = new Image();
oNewsOff.src = '/templates/images/topnav/news_off.jpg';

var oMembershipOn = new Image();
oMembershipOn.src = '/templates/images/topnav/membership_on.jpg';
var oMembershipOff = new Image();
oMembershipOff.src = '/templates/images/topnav/membership_off.jpg';

var oSocietyOn = new Image();
oSocietyOn.src = '/templates/images/topnav/society_on.jpg';
var oSocietyOff = new Image();
oSocietyOff.src = '/templates/images/topnav/society_off.jpg';

var oProfessionOn = new Image();
oProfessionOn.src = '/templates/images/topnav/profession_on.jpg';
var oProfessionOff = new Image();
oProfessionOff.src = '/templates/images/topnav/profession_off.jpg';

var oRegionsOn = new Image();
oRegionsOn.src = '/templates/images/topnav/regions_nations_on.jpg';
var oRegionsOff = new Image();
oRegionsOff.src = '/templates/images/topnav/regions_nations_off.jpg';

var oJobOppsOn = new Image();
oJobOppsOn.src = '/templates/images/topnav/jobopps_on.gif';
var oJobOppsOff = new Image();
oJobOppsOff.src = '/templates/images/topnav/jobopps_off.gif';