if (document.images)
{
//first images for rollover	
var teapots_init= new Image ();
teapots_init.src="images/images/background_up_07.jpg";
var firings_init = new Image();
firings_init.src="images/images/background_up_06.jpg";
var functional_init = new Image();
functional_init.src="images/images/background_up_03.jpg";
var wild_flower_init = new Image();
wild_flower_init.src="images/images/background_up_05.jpg";
var about_init = new Image();
about_init.src="images/images/background_up_08.jpg";
var contact_init = new Image();
contact_init.src="images/images/background_up_04.jpg";

//second images for rollover. Home page
var teapots_new=new Image();
teapots_new.src="images/images/background_down_07.jpg";
var firings_new=new Image();
firings_new.src="images/images/background_down_06.jpg";
var functional_new=new Image();
functional_new.src="images/images/background_down_03.jpg";
var wild_flower_new=new Image();
wild_flower_new.src="images/images/background_down_05.jpg";
var about_new=new Image();
about_new.src="images/images/background_down_08.jpg";
var contact_new=new Image();
contact_new.src="images/images/background_down_04.jpg"; 
}
function change_it(the_image)//original image is changed
{
  if (document.images)
  {
    document.images[the_image].src= eval(the_image + "_new.src");
  }
}
function change_back(the_image)//changes image back to original
{
  if (document.images)
  {
    document.images[the_image].src=eval(the_image + "_init.src");
  }
}