var currentdate = 0;
var core = 0;

function initArray() {

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

image = new initArray(
"http://www.houston-boys.org/Images/1.jpg",
"http://www.houston-boys.org/Images/2.jpg",
"http://www.houston-boys.org/Images/3.jpg"
);

var currentdate = new Date();
var core = currentdate.getSeconds() % image.length;
var ranimage = image[core];

document.write('<img src=\"'+ranimage+'\" border="0" width="750" height="192" alt="Houston Boys">');

//-->