var myHLImage='';
var myBGImage='';
var myHLDiv='';
var myHLElement='';

function HighLightImage(highlightedElement, backgroundImage, highlightedImage, highlightedDiv)
{
    if (myHLElement!=highlightedElement)
    {
        if (document.getElementById(myHLElement))
        {
            document.getElementById(myHLElement).src=myBGImage;
            document.getElementById(myHLDiv).style.visibility='hidden';
        }
        if (document.getElementById(highlightedElement))
        {
            myHLImage=highlightedImage;
            myBGImage=backgroundImage;
            myHLDiv=highlightedDiv;
            myHLElement=highlightedElement;
            document.getElementById(myHLElement).src=myHLImage;
            document.getElementById(myHLDiv).style.visibility='visible';
         }  
    }
}

var navHLImage='';
var navBGImage='';
var navHLDiv='';
var navHLElement='';

function HighLightNav(highlightedElement, backgroundImage, highlightedImage, highlightedDiv)
{
    if (navHLElement!=highlightedElement)
    {
        if (document.getElementById(navHLElement))
        {
            document.getElementById(navHLElement).src=navBGImage;
            document.getElementById(navHLDiv).style.visibility='hidden';
        }
        if (document.getElementById(highlightedElement))
        {
            navHLImage=highlightedImage;
            navBGImage=backgroundImage;
            navHLDiv=highlightedDiv;
            navHLElement=highlightedElement;
            document.getElementById(navHLElement).src=navHLImage;
            document.getElementById(navHLDiv).style.visibility='visible';
         }  
    }
}

function UnHighLightNav(highlightedElement, backgroundImage, highlightedImage, highlightedDiv)
{
    if (navHLElement!=highlightedElement)
    {
        if (document.getElementById(navHLElement))
        {
            document.getElementById(navHLElement).src=navBGImage;
            document.getElementById(navHLDiv).style.visibility='hidden';
        }
        navHLImage='';
        navBGImage='';
        navHLDiv='';
        navHLElement='';
    }
}

function ShowBiggerPicture(myURL)
{
    myFrameName = getFrameName();
    var myFrame = document.getElementById(myFrameName);
    myFrame.src = 'ShowImage.aspx?ImageURL=' + myURL; 
    return false;
}

function ShowImage(myID)
{
    myFrameName = getFrameName();
    var myFrame = document.getElementById(myFrameName);
    myFrame.src = 'ShowImage.aspx?ImageURL=graphics/LAND_' + myID + '.jpg';
    autoOn = false;
    imgNum=myID;
}

function ShowImage2(myID)
{
    myFrameName = getImageName();
    var myFrame = document.getElementById(myFrameName);
    myFrame.src = 'graphics/LAND_' + myID + '.jpg';
    autoOn = false;
    imgNum=myID;
}

var autoOn=true;
var imgNum=2;


function autoImage()
{
    if (autoOn)
    {
        myFrameName = getImageName();
        var myFrame = document.getElementById(myFrameName);
        myFrame.src = 'graphics/LAND_' + imgNum + '.jpg';
        imgNum++;
        if (imgNum>10) imgNum=1;
    }
}