overviewoff = new Image();
overviewoff.src = "images/overview-off.gif";

overviewon = new Image();
overviewon.src = "images/overview-on.gif";

HRISoff = new Image();
HRISoff.src = "images/HRIS-off.gif";

HRISon = new Image();
HRISon.src = "images/HRIS-on.gif";

payrolloff = new Image();
payrolloff.src = "images/payroll-off.gif";

payrollon = new Image();
payrollon.src = "images/payroll-on.gif";

asooff = new Image();
asooff.src = "images/aso-off.gif";

asoon = new Image();
asoon.src = "images/aso-on.gif";

consultingoff = new Image();
consultingoff.src = "images/consulting-off.gif";

consultingon = new Image();
consultingon.src = "images/consulting-on.gif";

investmentoff = new Image();
investmentoff.src = "images/investment-off.gif";

investmenton = new Image();
investmenton.src = "images/investment-on.gif";

benefitsoff = new Image();
benefitsoff.src = "images/benefits-off.gif";

benefitson = new Image();
benefitson.src = "images/benefits-on.gif";


function buttonOver(imgName) {
	buttonChange(imgName,'on');
}

function buttonOut(imgName) {
	buttonChange(imgName,'off');
}

function buttonChange(imgName,mode) {
	document[imgName].src = eval(imgName + mode + ".src");
}