<!--

function onLoad()
{
    if (document.images)
    {
        home_on = new Image();
        home_on.src = "images/home_p1.gif";
        aboutus_on = new Image();
        aboutus_on.src = "images/about1.gif";
        contact_on = new Image();
        contact_on.src = "images/product1.gif";
        siteindex_on = new Image();
        siteindex_on.src = "images/contact1.gif";
        glossary_on = new Image();
        glossary_on.src = "images/enquiry1.gif";
		
        home = new Image();
        home.src = "images/home_p.gif";
        aboutus = new Image();
        aboutus.src = "images/about.gif";
        contact = new Image();
        contact.src = "images/product.gif";
        siteindex = new Image();
        siteindex.src = "images/contact.gif";
        glossary = new Image();
        glossary.src = "images/enquiry.gif";
		}
}

onLoad();
<!--

function image_swap(imgName)
{
    if (document.images)
    {
        document [imgName].src = eval(imgName + "_on.src");
    }
    else
    {
        return;
    }
}

function image_restore(imgName)
{
    if (document.images)
    {
        document [imgName].src = eval(imgName + ".src");
    }
    else
    {
        return;
    }
}

// -->