janitorialon = new Image();
janitorialon.src = "assets/images/btnJanitorialServices-over.gif";
carpetcleaningon = new Image();
carpetcleaningon.src = "assets/images/btnCarpetCleaning-over.gif";

janitorialoff = new Image();
janitorialoff.src = "assets/images/btnJanitorialServices.gif";
carpetcleaningoff = new Image();
carpetcleaningoff.src = "assets/images/btnCarpetCleaning.gif";





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

//Function to 'deactivate' images.
function imgOff(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "off.src");
    }
}