// Array for images for random display.
var randomImageArray = new Array(6);
randomImageArray["Image1"] = "sharedfiles/bridgeellis/images/site/header_image1.jpg";
randomImageArray["Image2"] = "sharedfiles/bridgeellis/images/site/header_image2.jpg";
randomImageArray["Image3"] = "sharedfiles/bridgeellis/images/site/header_image3.jpg";
randomImageArray["Image4"] = "sharedfiles/bridgeellis/images/site/header_image4.jpg";
randomImageArray["Image5"] = "sharedfiles/bridgeellis/images/site/header_image5.jpg";
randomImageArray["Image6"] = "sharedfiles/bridgeellis/images/site/header_image6.jpg";

// Pre-loader array for mouse over images.
for (i=0; i < randomImageArray.length; i++)
{
  var preload = new Image();
  preload.src = randomImageArray['Image'+i];
}


// Establish an image to display through random calculation.
thisRandomIndex = Math.ceil(Math.random() * (randomImageArray.length - 1));


// Swap a parsed image (ie. name="thisImageName")
function ShowRandomImage(thisImageName)
{
  // Establish an image to display through random calculation.
  thisRandomIndex = Math.ceil(Math.random() * (randomImageArray.length - 1));

  document[thisImageName].src = randomImageArray['Image'+thisRandomIndex];
}