// preload L1 images
var L1Btn = new Array();
L1Btn = ["culture","opportunity","caseStudies","currentMission","joinUs","news"];
for (i = 0; i < L1Btn.length; i++) {
  eval(L1Btn[i] + "on = new Image();");
  eval(L1Btn[i] + "off = new Image();");
  eval(L1Btn[i] + "on.src = \"/img/navigation/l1-" + L1Btn[i] + "-1.gif\";");
  eval(L1Btn[i] + "off.src = \"/img/navigation/l1-" + L1Btn[i] + "-0.gif\";");
}


function imgOn(imgName) {
 	document[imgName].src=eval(imgName + "on.src")
}

function imgOff(imgName) {
 	document[imgName].src=eval(imgName + "off.src")
}