var core = 0;

function initArray() {

this.length = initArray.arguments.length;
  for (var i = 0; i < this.length; i++) {
  this[i] = initArray.arguments[i];
  }
}

link = new initArray(
"http://ellis.server290.com",
"http://ellis.server290.com",
"http://ellis.server290.com"
);

image = new initArray(
"http://ellis.server290.com/wp-content/themes/energytheme/images/homebg1.png",
"http://ellis.server290.com/wp-content/themes/energytheme/images/homebg2.png",
"http://ellis.server290.com/wp-content/themes/energytheme/images/homebg3.png"
);

text = new initArray(
"Ellis Energy",
"Ellis Energy",
"Ellis Energy"
);

var core = (Math.floor(Math.random()*3));
var ranlink  = link[core];
var ranimage = image[core];
var rantext  = text[core];

document.write('<a href=\"' +ranlink+ '\"><img src=\"'+ranimage+'\" border="0" alt=\"'+rantext+'\"></a>');