if (document.images)
   {
     nav_howon= new Image(113,37);
     nav_howon.src="http://www.modopost.com/images/nav_how_on.png";  
     nav_howoff= new Image(113,37);
     nav_howoff.src="http://www.modopost.com/images/nav_how.png";

     nav_createon= new Image(127,37);
     nav_createon.src="http://www.modopost.com/images/nav_create_on.png";  
     nav_createoff= new Image(127,37);
     nav_createoff.src="http://www.modopost.com/images/nav_create.png";

     nav_search_poston= new Image(131,37);
     nav_search_poston.src="http://www.modopost.com/images/nav_search_post_on.png";  
     nav_search_postoff= new Image(131,37);
     nav_search_postoff.src="http://www.modopost.com/images/nav_search_post.png";

     nav_search_shopon= new Image(140,37);
     nav_search_shopon.src="http://www.modopost.com/images/nav_search_shop_on.png";  
     nav_search_shopoff= new Image(140,37);
     nav_search_shopoff.src="http://www.modopost.com/images/nav_search_shop.png";

     nav_faqon= new Image(56,37);
     nav_faqon.src="http://www.modopost.com/images/nav_faq_on.png";  
     nav_faqoff= new Image(56,37);
     nav_faqoff.src="http://www.modopost.com/images/nav_faq.png";

     sign_up_buttonon= new Image(296,47);
     sign_up_buttonon.src="http://www.modopost.com/images/sign_up_button_on.png";  
     sign_up_buttonoff= new Image(296,47);
     sign_up_buttonoff.src="http://www.modopost.com/images/sign_up_button.png";

     sign_up_button2on= new Image(296,47);
     sign_up_button2on.src="http://www.modopost.com/images/sign_up_button_on.png";  
     sign_up_button2off= new Image(296,47);
     sign_up_button2off.src="http://www.modopost.com/images/sign_up_button.png";

	  post_item_buttonon= new Image(187,42);
     post_item_buttonon.src="http://www.modopost.com/images/post_item_button_on.png";  
     post_item_buttonoff= new Image(187,42);
     post_item_buttonoff.src="http://www.modopost.com/images/post_item_button.png";

	  shop_others_buttonon= new Image(206,42);
     shop_others_buttonon.src="http://www.modopost.com/images/shop_others_button_on.png";  
     shop_others_buttonoff= new Image(206,42);
     shop_others_buttonoff.src="http://www.modopost.com/images/shop_others_button.png";

	  signup_free_buttonon= new Image(199,42);
     signup_free_buttonon.src="http://www.modopost.com/images/signup_free_button_on.png";  
     signup_free_buttonoff= new Image(199,42);
     signup_free_buttonoff.src="http://www.modopost.com/images/signup_free_button.png";

	  learn_shop_buttonon= new Image(341,47);
     learn_shop_buttonon.src="http://www.modopost.com/images/learn_shop_button_on.png";  
     learn_shop_buttonoff= new Image(341,47);
     learn_shop_buttonoff.src="http://www.modopost.com/images/learn_shop_button.png";

	  learn_post_buttonon= new Image(342,47);
     learn_post_buttonon.src="http://www.modopost.com/images/learn_post_button_on.png";  
     learn_post_buttonoff= new Image(342,47);
     learn_post_buttonoff.src="http://www.modopost.com/images/learn_post_button.png";
}

function lightup(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
 }

function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }