if (document.images) {
   mortgagesOn = new Image();
   mortgagesOn.src = "images/links/mortgages-on.gif";
   mortgagesOff = new Image();
   mortgagesOff.src = "images/links/mortgages-off.gif";
   }

if (document.images) {
   remortgagesOn = new Image();
   remortgagesOn.src = "images/links/remortgages-on.gif";
   remortgagesOff = new Image();
   remortgagesOff.src = "images/links/remortgages-off.gif";
   }

if (document.images) {
   pensionsOn = new Image();
   pensionsOn.src = "images/links/pensions-on.gif";
   pensionsOff = new Image();
   pensionsOff.src = "images/links/pensions-off.gif";
   }

if (document.images) {
   investmentsOn = new Image();
   investmentsOn.src = "images/links/investments-on.gif";
   investmentsOff = new Image();
   investmentsOff.src = "images/links/investments-off.gif";
   }

if (document.images) {
   savingsOn = new Image();
   savingsOn.src = "images/links/savings-on.gif";
   savingsOff = new Image();
   savingsOff.src = "images/links/savings-off.gif";
   }

if (document.images) {
   lifeOn = new Image();
   lifeOn.src = "images/links/life-assurance-on.gif";
   lifeOff = new Image();
   lifeOff.src = "images/links/life-assurance-off.gif";
   }

if (document.images) {
   insuranceOn = new Image();
   insuranceOn.src = "images/links/insurance-on.gif";
   insuranceOff = new Image();
   insuranceOff.src = "images/links/insurance-off.gif";
   }


function activate(image_name) {
   if (document.images) {
       document[image_name].src = eval(image_name + "On.src");
   }
   }

function deactivate(image_name) {
   if (document.images) {
       document[image_name].src = eval(image_name + "Off.src");
   }
}