var link_path  = "/";

// Function that return a number between 0 and "nums - 1"
function getRandom(nums)
{
    var ranNum= Math.round(Math.random()*nums);
    return ranNum;
}

// Tells us how many images we have available.
var numberOfImages = 4;
var randomNumber = getRandom(numberOfImages);

// Create an array to hold the names of all images.
var image = new Array(numberOfImages);
image[0]= link_path+"images/branding-img_01";
image[1]= link_path+"images/branding-img_02";
image[2]= link_path+"images/branding-img_03";
image[3]= link_path+"images/branding-img_04";
image[4]= link_path+"images/branding-img_05";