function swap(targetId)

{

  



        target = document.getElementById(targetId);

        target2 = document.getElementById(targetId+"1");

        

            if (target.style.display == "none")

                {

				//show

				

				a = document.getElementById("intruderalarms");

				a.style.display = "none";

				a = document.getElementById("intruderalarms1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("firealarms");

				a.style.display = "none";

				a = document.getElementById("firealarms1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";



				a = document.getElementById("monitoredalarms");

				a.style.display = "none";

				a = document.getElementById("monitoredalarms1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";



				a = document.getElementById("cctv");

				a.style.display = "none";

				a = document.getElementById("cctv1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("access");

				a.style.display = "none";

				a = document.getElementById("access1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("locksmith");

				a.style.display = "none";

				a = document.getElementById("locksmith1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("lighting");

				a.style.display = "none";

				a = document.getElementById("lighting1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("physical");

				a.style.display = "none";

				a = document.getElementById("physical1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

                target.style.display = "";

				target2.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_down.gif)";

                }  

            

            else 

                {

				//hide

				//close all divs then open

				a = document.getElementById("intruderalarms");

				a.style.display = "none";

				a = document.getElementById("intruderalarms1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("firealarms");

				a.style.display = "none";

				a = document.getElementById("firealarms1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";



				a = document.getElementById("monitoredalarms");

				a.style.display = "none";

				a = document.getElementById("monitoredalarms1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";



				a = document.getElementById("cctv");

				a.style.display = "none";

				a = document.getElementById("cctv1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("access");

				a.style.display = "none";

				a = document.getElementById("access1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("locksmith");

				a.style.display = "none";

				a = document.getElementById("locksmith1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("lighting");

				a.style.display = "none";

				a = document.getElementById("lighting1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

				a = document.getElementById("physical");

				a.style.display = "none";

				a = document.getElementById("physical1");

				a.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

				

                target.style.display = "none";

				target2.style.backgroundImage = "url(images/site_design_images/bg_nav_arrow_in.gif)";

                }

       

}