//new mouse overs
if (document.images){
    //declare and load images for each module
    var module1_out = new Image();
    module1_out.src = "images/modules/module1.jpg";
    var module1_over = new Image();
    module1_over.src = "images/modules/module12.jpg";
    var module2_out = new Image();
    module2_out.src = "images/modules/module2.jpg";
    var module2_over = new Image();
    module2_over.src = "images/modules/module22.jpg";
    var module3_out = new Image();
    module3_out.src = "images/modules/module3.jpg";
    var module3_over = new Image();
    module3_over.src = "images/modules/module32.jpg";
    var module4_out = new Image();
    module4_out.src = "images/modules/module4.jpg";
    var module4_over = new Image();
    module4_over.src = "images/modules/module42.jpg";
    var module5_out = new Image();
    module5_out.src = "images/modules/module5.jpg";
    var module6_out = new Image();
    module6_out.src = "images/modules/module6.jpg";
    var module6_over = new Image();
    module6_over.src = "images/modules/module62.jpg";
    var header = new Image();
    header.src = "images/layout/header.png";
    var footer = new Image();
    footer.src = "images/layout/footer.png";
    var bkgnd = new Image();
    bkgnd.src = "images/layout/tile.gif";
}

function bkgnds(){
    // set background images for header, footer, body and module5
    $('header').style.backgroundImage.src=header;
    $('footer').style.backgroundImage.src=footer;
    document.body.style.backgroundImage.src=bkgnd;
    $('subCenter').src=module5_out;
}
function over_module1() {
  if (document.images) {
    //changes the image
    $('module1').src = module1_over.src;
  }
}
function out_module1() {
  if (document.images) {
    //changes the image
    $('module1').src = module1_out.src;
  }
}
function over_module2() {
  if (document.images) {
    //changes the image
    $('module2').src = module2_over.src;
  }
}
function out_module2() {
  if (document.images) {
    //changes the image
    $('module2').src = module2_out.src;
  }
}
function over_module3() {
  if (document.images) {
    //changes the image
    $('module3').src = module3_over.src;
  }
}
function out_module3() {
  if (document.images) {
    //changes the image
    $('module3').src = module3_out.src;
  }
}
function over_module4() {
  if (document.images) {
    //changes the image
    $('module4').src = module4_over.src;
  }
}
function out_module4() {
  if (document.images) {
    //changes the image
    $('module4').src = module4_out.src;
  }
}
function over_module6() {
  if (document.images) {
    //changes the image
    $('module6').src = module6_over.src;
  }
}
function out_module6() {
  if (document.images) {
    //changes the image
    $('module6').src = module6_out.src;
  }
}