function dispNav(nav) {
   for(i=0;i<=3;i++) {
      disp="none";
      if(i==nav || i==0) disp="block";
      if(document.getElementById('c_'+i)) document.getElementById('c_'+i).style.display=disp;
   }
}

function dispImg(img) {
   for(i=1;i<=3;i++) {
      if(img==0) {
         reg="block";
         high="none";
      }
      else {
         if(i==img) {
            reg="none";
            high="block";
         } 
         else {
            reg="block";
            high="none";
         }
      }
      if(adv_nav>0) {
         if(adv_nav==i && img!=adv_nav) {
            if(document.getElementById('img_'+adv_nav+'_reg')) document.getElementById('img_'+adv_nav+'_reg').style.display="none";
            if(document.getElementById('img_'+adv_nav+'a_reg')) document.getElementById('img_'+adv_nav+'a_reg').style.display="block";
         }
         else if(document.getElementById('img_'+i+'_reg')) document.getElementById('img_'+i+'_reg').style.display=reg;
         if(img==adv_nav) if(document.getElementById('img_'+adv_nav+'a_reg')) document.getElementById('img_'+adv_nav+'a_reg').style.display="none";
      }
      else if(document.getElementById('img_'+i+'_reg')) document.getElementById('img_'+i+'_reg').style.display=reg;
      if(document.getElementById('img_'+i+'_high')) document.getElementById('img_'+i+'_high').style.display=high;
   }
}


function getMousePos(e) {
   var xPos=e? e.pageX : window.event.x;
   var yPos=e? e.pageY : window.event.y;
   if(document.all && !document.captureEvents) {
      xPos+=document[docEl].scrollLeft;
      yPos+=document[docEl].scrollTop;
   }
   if(document.layers) routeEvent(e);

   if(xPos<65 || xPos>982 || yPos<95 || yPos>363) {
      dispImg(adv_nav);
      dispNav(adv_nav);


   }

}

docEl=(typeof document.compatMode != "undefined" && document.compatMode!="BackCompat")? "documentElement" : "body";
if(document.layers) document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=getMousePos;