var Curr=1
  
   function show(arg) {
     var d=document
     var zero=d.getElementById('Layer0')
     if (zero) {
       if (zero.style) {zero=zero.style}
       zero.visibility="hidden"
       }
   if (arg > Limm) {arg = 1}
     var s='show'
     var h='hide'
     var obj=d.getElementById('Layer'+arg)
     if  (obj.style) {obj=obj.style; s='visible'; h='hidden';}
     for (var i=1; i <= Limm; i++) {
        var temp = 'Layer'+i
        var tObj=d.getElementById('thumb'+i)
        if (tObj && tObj.style) {tObj=tObj.style}
        if (i==arg) {
          obj.visibility=s;
          if (tObj){
            Curr=i
            tObj.filter = "alpha(opacity:100)";
            tObj.MozOpacity=1
            tObj.opacity=1
            //tObj.filters.alpha.opacity=100
            }
          }
        else {
          temp=d.getElementById(temp)
          if (temp.style) {temp=temp.style}
          temp.visibility=h
          if (tObj){
            tObj.filter = "alpha(opacity:30)";
            tObj.MozOpacity=.3
            tObj.KHTMLOpacity=.3
            tObj.opacity=.3
            //tObj.filters.alpha.opacity=30
             }
          }
        }
     }