----------------------------------------------------------------------
----------------------------------------------------------------------
----------------------------------------------------------------------
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. . .


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

. . .

function getPageLeft(obj)       {
   if (isNav)   {
      return obj.pagex
   } else {
      return obj.offsetLeft
   }
}

. . .