// JavaScript Document
function getQueryVariable(variable) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  } 

  return -1;
}

/*
Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com)
Over 200+ free JavaScripts here!
Updated: 00/04/25
*/

function random_imglink(){
  //specify random images below. You can have as many as you wish
  var myimages=new Array()
  myimages[0]="images/01.jpg" 
  myimages[1]="images/02.jpg" 
  myimages[2]="images/03.jpg"
  myimages[3]="images/04.jpg"
  myimages[4]="images/05.jpg"
  myimages[5]="images/06.jpg"

  //specify corresponding links below
  var imagelinks=new Array()
  imagelinks[0]="hill.html"
  imagelinks[1]="lewless.html"
  imagelinks[2]="dettmer.html"
  imagelinks[3]="lilak.html"
  imagelinks[4]="stockman.html"
  imagelinks[5]="grider.html"

  var ry=parseInt(getQueryVariable("i"), 10)

  if (ry < 0) {
    ry=Math.floor(Math.random()*myimages.length)
  }

  var prevImage = ry-1
  var nextImage = ry+1

  document.write('<a href="'+imagelinks[ry]+'"><img src="'+myimages[ry]+'" border=0 alt="Alumni sucess stories - click to learn more..."></a> <br />')

  if (imagelinks[prevImage]) {
    document.write('')
  }

  if (imagelinks[nextImage]) {
    document.write('')
  }
}