Stub API to Get Y Position in N4/IE4

// xplat API to get Y pos
function getElementTop
   (elementName) {

var range = ""      // empty for Nav4
var styleObj = ""   // ditto
var topName = "top" // "top" in Nav4

if (isIE4) {  range = ".all"
              styleObj = ".style"   
              topName = "pixelTop" }

return eval("document" + range + "." 
+ elementName + styleObj + topName )  }

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