// Change Navigation Button State
//Modified by kalcy
function preloadNavImages() {
    
    Image1= new Image(957,27)
    Image2 = new Image(957,27)
    Image3 = new Image(957,27)
    Image4 = new Image(957,27)
    Image5 = new Image(957,27)

    Image1.src = "/inc/images/bg_mainNav_de_home.jpg"
    Image2.src = "/inc/images/bg_mainNav_de_prod.jpg"
    Image3.src = "/inc/images/bg_mainNav_de_help.jpg"
    Image4.src = "/inc/images/bg_mainNav_de_proj.jpg"
    Image5.src = "/inc/images/bg_mainNav_de_temp.jpg"
}
//Modified by kalcy
function btnOn(imgID) {
    var imgSrc = "url(" + "/inc/images/bg_mainNav_de_" + imgID + ".jpg" + ")";
    document.getElementById('main_nav').style.backgroundImage = imgSrc;
}
//Modified by kalcy
function btnOff(defaultBg) {
    var defaultBgImgSrc = "url(" + "/inc/images/bg_mainNav_de_" + defaultBg + ".jpg" + ")";
    // document.getElementById('main_nav').style.backgroundImage = "url(images/bg_mainNav.jpg)";
    document.getElementById('main_nav').style.backgroundImage = defaultBgImgSrc;
    // clearDropDownMenu();
}