var shadows = new Array();
var menu;
var timerId = 0;
var timerDelId = 0;
//used for the change_display(head) function
var sImgExpandedArrow = "";	
var sImgDefaultArrow = "";

function rollon(a) {
a.style.backgroundColor='#CCCCCC';
a.style.border = '#999999 solid 1px';
}

function rolloff(a) {
if (a.className == 'menuBarSel') {
a.style.backgroundColor='#FFFFFF'
}
else {
a.style.backgroundColor='#f1f1f1';
a.style.border = '#f1f1f1 solid 1px';
}
}
// added by atilab, works with the 'In This Article' component


function change_display(head) {
var oSrcEle = window.event.srcElement
sImg666 = oSrcEle.src

if (sImgExpandedArrow == ""){
sImgExpandedArrow = "images/arrow_expand.gif";	
}
if (sImgDefaultArrow == ""){
sImgDefaultArrow = "images/arrow_default.gif";
}
if (document.all.item(head).style.display == "") 
{
document.all.item(head).style.display = "none";
oSrcEle.src = sImgExpandedArrow;
oSrcEle.alt = "Expand Window";
}
else 
{
document.all.item(head).style.display= "";
oSrcEle.src = sImgDefaultArrow;
oSrcEle.alt = "Collapse Window";
}
}

function chngColour(sID)
{
var oMainBorder = document.all.item("main" + sID);
var oHeaderBorder = document.all.item("header" + sID);
var oArticle = document.all.item("article" + sID);
var oArrowCol = document.all.item("arrowCol" + sID);
if (oMainBorder.className == 'componentBorder')
{
oMainBorder.className = 'componentBorderSel';
oHeaderBorder.className = 'componentBorderSel';
oArticle.className = 'componentHeaderSel';
oArrowCol.className = 'componentHeaderSel';
}
else
{
oMainBorder.className = 'componentBorder';
oHeaderBorder.className = 'componentBorder';
oArticle.className = 'componentHeader';
oArrowCol.className = 'componentHeader';				
}
}



function toggleImgDisplay(sImgName)
{
var oImages = document.images;
if (oImages != null)
{
var iImgLength = oImages.length;
for (var i=0; i<iImgLength; i++)
{
if (oImages[i].src.indexOf(sImgName)!=-1)
{
if (oImages[i].style.display=="none")
{
oImages[i].style.display="";
}
else
{
oImages[i].style.display="none";
}
}
}
}		
}



function preloadImages() 
{
if (document.images) {
var imgFiles = preloadImages.arguments;
var preloadArray = new Array();
for (var i=0; i<imgFiles.length; i++) {
preloadArray[i] = new Image;
preloadArray[i].src = imgFiles[i];
}
}
}

function swapImage()
{
var i,j=0,objStr,obj,swapArray=new Array,oldArray=document.swapImgData;
for (i=0; i < (swapImage.arguments.length-2); i+=3) {
objStr = swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1];
if ((objStr.indexOf('document.layers[')==0 && document.layers==null) ||
(objStr.indexOf('document.all[')   ==0 && document.all   ==null))
objStr = 'document'+objStr.substring(objStr.lastIndexOf('.'),objStr.length);
obj = eval(objStr);
if (obj != null) {
swapArray[j++] = obj;
swapArray[j++] = (oldArray==null || oldArray[j-1]!=obj)?obj.src:oldArray[j];
obj.src = swapImage.arguments[i+2];
} 
}
document.swapImgData = swapArray;
}

function swapImgRestore()
{
if (document.swapImgData != null)
for (var i=0; i<(document.swapImgData.length-1); i+=2)
document.swapImgData[i].src = document.swapImgData[i+1];
}