jQuery.preloadImages = function()
{
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery("<img>").attr("src", arguments[i]);
  }
}

$(document).ready(function(){
  $.preloadImages("/images/welcome/schools.jpg", 
                  "/images/welcome/councils.jpg", 
                  "/images/welcome/facilities.jpg", 
                  "/images/welcome/hotels.jpg");

  $("#banner .schools").hover(function(){
    $("#welcome #banner").css("background-image", "url(/images/welcome/schools.jpg)");
  });
  $("#banner .councils").hover(function(){
    $("#welcome #banner").css("background-image", "url(/images/welcome/councils.jpg)");
  });
  $("#banner .facilities").hover(function(){
    $("#welcome #banner").css("background-image", "url(/images/welcome/facilities.jpg)");
  });
  $("#banner .hotels").hover(function(){
    $("#welcome #banner").css("background-image", "url(/images/welcome/hotels.jpg)");
  });
});