var flag = false;
function imageLoad() {
    if (document.images) {
        img2on = new Image(); img2on.src = "http://www.coinflation.com/us_coin_calculator_on.gif";
        img3on = new Image(); img3on.src = "http://www.coinflation.com/silver_coin_calculator_on.gif";
        return (flag = true);
    }
}
if (document.images) {
    img2off = new Image(); img2off.src = "http://www.coinflation.com/us_coin_calculator.gif";
    img3off = new Image(); img3off.src = "http://www.coinflation.com/silver_coin_calculator.gif";
}
function rollIn(imgName) {
    if (document.images && (flag == true)) {
        document[imgName].src = eval(imgName + "on.src");
    }
}
function rollOut(imgName) {
    if (document.images){
        document[imgName].src = eval(imgName + "off.src");
    }
}