function showLayer(layerName) {
document.getElementById(layerName).style.visibility="visible"; 
}

function hideLayer(layerName) { 
document.getElementById(layerName).style.visibility="hidden";
}

function hideAll() { 
hideLayer('english'); 
hideLayer('metric'); 
}
   
     if(document.all && !document.getElementById) {
    	document.getElementById = function(id) {
         	return document.all[id];
    	}
	}

/***********************************************
* DD Tab Menu II script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

//Set tab to intially be selected when page loads:
//[which tab (1=first tab), ID of tab content to display]:
var initialtab=[1, "BenefitsTab"]
//Turn menu into single level image tabs (completely hides 2nd level)?
var turntosingle=0 //0 for no (default), 1 for yes
//Disable hyperlinks in 1st level tab images?
var disabletablinks=0 //0 for no (default), 1 for yes
var previoustab=""
//Set Tab2 one higher than number of tabs
var tab2=3

if (turntosingle==1)
document.write('<style type="text/css">\n#tabcontentcontainer{display: none;}\n<\/style>')

function expandcontent(cid, aobject, tab2){
if (disabletablinks==1)
aobject.onclick=new Function("return false")
if (tab2!=3)
aobject=tabobjlinks[tab2]
if (document.getElementById){
highlighttab(aobject)
if (turntosingle==0){
if (previoustab!="")
document.getElementById(previoustab).style.display="none"
document.getElementById(cid).style.display="block"
previoustab=cid
}}}

function highlighttab(aobject){
if (typeof tabobjlinks=="undefined")
collectddimagetabs()
for (i=0; i<tabobjlinks.length; i++)
tabobjlinks[i].className=""
aobject.className="current"
}

function collectddimagetabs(){
var tabobj=document.getElementById("tablist")
tabobjlinks=tabobj.getElementsByTagName("A")
}

function do_onload(){
collectddimagetabs()
expandcontent(initialtab[1], tabobjlinks[initialtab[0]-1], 3)
}

if (window.addEventListener)
window.addEventListener("load", do_onload, false)
else if (window.attachEvent)
window.attachEvent("onload", do_onload)
else if (document.getElementById)
window.onload=do_onload

// js from ruffwear.net
function MM_swapImgRestore() 
{ //v1.0
  if (document.MM_swapImgData != null)
    for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
      document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
}

function MM_swapImage() 
{ //v1.0
  var i,theObj,j=0,swapArray=new Array,oldArray=document.MM_swapImgData;
  for (i=0; i < (MM_swapImage.arguments.length-2); i+=3) {
    theObj = eval(MM_swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1])
    if (theObj != null) {
      swapArray[j++] = theObj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=theObj)?theObj.src:oldArray[j];
      theObj.src = MM_swapImage.arguments[i+2];
  } }
  document.MM_swapImgData = swapArray; //used for restore
}

function MM_displayStatusMsg(msgStr) 
{ //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

function MM_openBrWindow(theURL,winName,features) 
{ //v2.0
  window.open(theURL,winName,features);
}

function MM_preloadImages() 
{ //v2.0
  if (document.images) {
    var imgFiles = MM_preloadImages.arguments;
    if (document.preloadArray==null) document.preloadArray = new Array();
    var i = document.preloadArray.length;
    with (document) for (var j=0; j<imgFiles.length; j++) if (imgFiles[j].charAt(0)!="#"){
      preloadArray[i] = new Image;
      preloadArray[i++].src = imgFiles[j];
  } }
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		preloadFlag = true;
	}
}

function submitForm(s)  
{
   s.value = "  Sending - Please wait...  ";
   return true;
}