var currentsection = '';
var imageArray = new Array();
var activeimageArray = new Array();     
var restimageArray = new Array();       
var navpreloadtest = 0;
var last_image = null;
//var browsertest = 0;

function mouseover(image_name) {
    if (navpreloadtest) {
        if (last_image && (last_image != image_name)) mouseout(last_image);
        if (image_name != currentsection && image_name != 'noswap') {
                document.images[image_name].src = activeimageArray[image_name].src;
                last_image = image_name;
        }
   }
}

function mouseout(image_name) { if (navpreloadtest) {
        if (image_name != currentsection && image_name != 'noswap') {
                document.images[image_name].src = restimageArray[image_name].src;
        }
}}

function preloadimages() { 

    if (document.images) {

        x=0;
        for (i=0; i<document.images.length; i++) {
                if (document.images[i].name != 'noswap') {
                        imageArray[x] = document.images[i].name;
                        x++
                }
        }

        for (i = 0; i < imageArray.length; i++) {
                activeimageArray[imageArray[i]] = new Image();
                activeimageArray[imageArray[i]].src = './images/hdr/' + imageArray[i] + '-over.gif';
        }
        for (i = 0; i < imageArray.length; i++) {
                restimageArray[imageArray[i]] = new Image();
                restimageArray[imageArray[i]].src = './images/hdr/' + imageArray[i] + '.gif';
        }
        navpreloadtest = 1;
    }
}