function buildArray() {
  var a = buildArray.arguments;
  for (i=0; i<a.length; i++) {
    this[i] = a[i];
  }
  this.length = a.length;
}
var quote = new buildArray(  
  // Place Quotes Here, Separated by Commas  
  "<a href='/outings.htm'><img border='0' src='images/image1a.jpg'></a>", 
  "<a href='/outings.htm'><img border='0' src='images/image2a.jpg'></a>", 
  "<a href='/outings.htm'><img border='0' src='images/image3a.jpg'></a>", 
  "<a href='/outings.htm'><img border='0' src='images/image4a.jpg'></a>"

  // !NOTE: No Comma after last Quote!  
);
document.write(quote[Math.floor(Math.random()*quote.length)]);