function navShow(page){
   var img=document.getElementById("navImg");
   if (!img) return false;
   try { document.getElementById("menu1").style.display='none'; } catch (e) {};
   try { document.getElementById("menu2").style.display='none'; } catch (e) {};
   try { document.getElementById("menu3").style.display='none'; } catch (e) {};
   try { document.getElementById("menu4").style.display='none'; } catch (e) {};
   try { document.getElementById("menu5").style.display='none'; } catch (e) {};
   var a=document.getElementById(page);
   if(a){
      img.src="/images/"+page+".png";
      img.style.display='block';
      a.style.display='block';
   }else{
      img.style.display='none';
   }
}

var i=new Array;
i.push(new Image);
i[i.length-1].src="/images/menu1.png";
i.push(new Image);
i[i.length-1].src="/images/menu2.png";
i.push(new Image);
i[i.length-1].src="/images/menu3.png";
i.push(new Image);
i[i.length-1].src="/images/menu4.png";
i.push(new Image);
i[i.length-1].src="/images/menu5.png";