layerRef = ""
styleRef = ""
isNav = ""
isIE = ""

if (parseInt(navigator.appVersion) >= 4) 
 {
   if (navigator.appName == "Netscape")
   	  {
	   		isNav = true
	  }
   else 
      {
	   		isIE = true
	  }
 }
 
 if (navigator.appName == "Netscape")
 {
   	layerRef = ".layers"
	styleRef = ""
 }
else
 {
   	layerRef = ".all"
	styleRef = ".style"
 }