if (document.images) {
    var imgIn = new Object( );
    imgIn["navabout"] = new Image();
    imgIn["navproduct"] = new Image();
    imgIn["navtraining"] = new Image();
    imgIn["navtech"] = new Image();
    imgIn["navstore"] = new Image();
    imgIn["navabout"].src = "images/about_r.gif";
    imgIn["navproduct"].src = "images/product_r.gif";
    imgIn["navtraining"].src = "images/training_r.gif";
    imgIn["navtech"].src = "images/tech_r.gif";
    imgIn["navstore"].src = "images/store_r.gif";

    var imgOut = new Object( );
    imgOut["navabout"] = new Image();
    imgOut["navproduct"] = new Image();
    imgOut["navtraining"] = new Image();
    imgOut["navtech"] = new Image();
    imgOut["navstore"] = new Image();    
    imgOut["navabout"].src = "images/about.gif";
    imgOut["navproduct"].src = "images/product.gif";
    imgOut["navtraining"].src = "images/training.gif";
    imgOut["navtech"].src = "images/tech.gif"; 
    imgOut["navstore"].src = "images/store.gif";
        	
function setImage(imgName, type) {
    if (document.images) {
        if (type == "in") {
            document.images[imgName].src = imgIn[imgName].src;
            return true;
        } else if (type == "out") {
            document.images[imgName].src = imgOut[imgName].src;
            return true;
        }
    }
    return false;
}
}