function rolloverHigh(imgName, newImagePath) {
    var img = document.images[imgName];

    if (newImagePath) {
        img.src = newImagePath;
    } else {
        if (img.src.indexOf("_hi.") < 0)
            img.src = img.src.replace(/\.(\w+)$/, "_hi.$1");
    }        
}

function rolloverLow(imgName, newImagePath) {
    var img = document.images[imgName];
    if (newImagePath)
        img.src = newImagePath;
    else
        img.src = img.src.replace(/\_hi\.(\w+)$/, ".$1");
}

var imgArray = new Array(
    "b_contact_hi.gif",
    "b_home_hi.gif",
    "b_what_are_hi.gif",
    "b_why_should_hi.gif",
    "b_how_can_hi.gif",
    "b_resource_hi.gif"
    );

var loadedImages = new Array();

function preloadImages() {

    for (var i=0; i<imgArray.length; i++) {
        loadedImages[i] = new Image(1,1);
        loadedImages[i].src = "images/" + imgArray[i];
    }

}

var onloadScripts = new Array(
    "preloadImages()"
);

function setOnloadScript(functionName) {
    onloadScripts[onloadScripts.length] = functionName;
}

function executeOnloadScripts() {
    for (var i=0; i<onloadScripts.length; i++) {
        eval(onloadScripts[i]);
    }
}

window.onload = executeOnloadScripts;


function doFormCancel() {
    window.history.back();
    return false;
}

function writeMasthead() {
    var imgArray = new Array(
        "home_05_man.jpg",
        "home_05_woman1.jpg",
        "home_05_woman2.jpg"
    );

    var rand = Math.floor(imgArray.length * Math.random());
    var imgPath = imgArray[rand];

    var htmlStr = '<tr><td style="background: url(images/' + imgPath + ');">' +
                  '<img src="images/spacer.gif" name="mainmenu" alt="" ' +
                  'width="800" height="123" border="0" usemap="#shapes"></td></tr>';

    document.open()
    document.write(htmlStr);
    document.close();
    
}