// 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]="stu_profiles/images/a_cherrette_sl.jpg" 
  myimages[1]="stu_profiles/images/brandon_sl.jpg" 
  myimages[2]="stu_profiles/images/jason_sl.jpg"
  myimages[3]="stu_profiles/images/tim_sl.jpg"
  myimages[4]="stu_profiles/images/ackall_sl.jpg"
  myimages[5]="stu_profiles/images/tameka_sl.jpg"
  myimages[6]="stu_profiles/images/tahera_sl.jpg"

  //specify corresponding links below
  var imagelinks=new Array()
  imagelinks[0]="stu_profiles/a_cherrette.htm"
  imagelinks[1]="stu_profiles/brandon.htm"
  imagelinks[2]="stu_profiles/jason.htm"
  imagelinks[3]="stu_profiles/tim.htm"
  imagelinks[4]="stu_profiles/ackall.htm"
  imagelinks[5]="stu_profiles/tameka.htm"
  imagelinks[6]="stu_profiles/tahera.htm"

  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="Click Here for Student Profile"></a> <br />')

  if (imagelinks[prevImage]) {
    document.write('&lt;&lt;<a href="'+window.location.pathname+'?i='+prevImage+'" style="margin:6px;">Previous</a>')
  }

  if (imagelinks[nextImage]) {
    document.write('<a href="'+window.location.pathname+'?i='+nextImage+'" style="margin:6px;">Next</a>&gt;&gt;')
  }
}