{

img1on=new Image();
img1on.src ="graphics/interior/on/interior_04.gif";
img2on=new Image();
img2on.src ="graphics/interior/on/interior_05.gif";
img3on=new Image();
img3on.src ="graphics/interior/on/interior_06.gif";
img4on=new Image();
img4on.src ="graphics/interior/on/interior_07.gif";
img5on=new Image();
img5on.src ="graphics/interior/on/interior_08.gif";

img1off=new Image();
img1off.src ="graphics/interior/interior_04.gif";
img2off=new Image();
img2off.src ="graphics/interior/interior_05.gif";
img3off=new Image();
img3off.src ="graphics/interior/interior_06.gif";
img4off=new Image();
img4off.src ="graphics/interior/interior_07.gif";
img5off=new Image();
img5off.src ="graphics/interior/interior_08.gif";

}
                                        
current_layer = "startLayer";

if (navigator.appName == "Netscape")  //setup netscape DOM types
 {  
  layerStyleRef="layer.";
  layerRef="document";             
  styleSwitch="";
 }
else
 {                                //setup IE DOM types
  layerStyleRef="layer.style.";
  layerRef="document.all";
  styleSwitch=".style";         
 }

function imgAct(imgName)
 {
    document[imgName].src=eval(imgName+"on.src");
    current_image = imgName;
 }

function imgInact(imgName)
 {
    document[imgName].src=eval(imgName+"off.src");
 }          

function showLayer(layerNum)
 {
    if (current_layer != "startLayer")
     { hideCurrent(); }

    new_layer = "layer" + layerNum;
    eval(layerRef+'["' + new_layer + '"]' + styleSwitch + '.visibility = "visible"');
    current_layer = new_layer;                  
 }

function hideCurrent()
 { 
    if (current_layer != "startLayer")
    {
     eval (layerRef+'["'+current_layer+'"]'+styleSwitch+'.visibility="hidden"');
   } 
 }