function listingNav(theBox){
        ListingNavHide('image-box');
        ListingNavHide('map-box');
        ListingNavHide('video-box');
        ListingNavShow(theBox);
    }

    function ListingNavShow(theBox){
    
        if (theBox=='map-box'){
            GoogMapInit();
        } else {
            var theBox=document.getElementById(theBox);        
            theBox.style.display = "";
        }
      
    }
    
    function ListingNavHide(divId){
        var thisBox=document.getElementById(divId);
        thisBox.style.display = "none";
    }
    
 //   function ListingNavOnLoad(){
//        var theBox=document.getElementById('map-box');        
//        theBox.style.display = "none";
//        theBox.style.visibility = "visible";
//        theBox.style.height = "300px";
//               
//        var theBox2=document.getElementById('video-box');        
//        theBox2.style.display = "none";
//        theBox2.style.visibility = "visible";
//        theBox2.style.height = "300px";

//        theBox3=document.getElementById('media-box-container');
//        theBox3.style.height = "auto";
//    }