//This method cannnot be put in the user control of fuel
//Because the user control could be invisible, so the method would not be found.
function ChangeFuel() {
    if (document.getElementById('ctl00_cph1_FuelTree_TrDIVFuel').style.display == 'none') {
        document.getElementById('ctl00_cph1_FuelTree_TrDIVFuel').style.display = 'block';
        document.getElementById('DivTitleFuel').style.display = 'none';
        if (document.getElementById('ctl00_cph1_FuelTree_imgFuel').src.indexOf('images/arrow.gif', 0) != -1) {
            document.getElementById('ctl00_cph1_FuelTree_imgFuel').src = 'images/arrow_h.gif';
        }
        else {
            document.getElementById('ctl00_cph1_FuelTree_imgFuel').src = 'images/arrow_h.gif';
        }

    }
    else {
        document.getElementById('ctl00_cph1_FuelTree_TrDIVFuel').style.display = 'none';
        document.getElementById('DivTitleFuel').style.display = 'block';
        if (document.getElementById('ctl00_cph1_FuelTree_imgFuel').src.indexOf('images/arrow_h.gif', 0) != -1) {
            document.getElementById('ctl00_cph1_FuelTree_imgFuel').src = 'images/arrow.gif';
        }
        else {
            document.getElementById('ctl00_cph1_FuelTree_imgFuel').src = 'images/arrow.gif';
        }
    }
    if (document.getElementById('TrDIVUNFCCC') != null) {
        if (document.getElementById('TrDIVUNFCCC').style.display == 'block') {
            document.getElementById('TrDIVUNFCCC').style.display = 'none';
            document.getElementById('DivTitleUN').style.display = 'block';
            if (document.getElementById('imgUNFCCC').src.indexOf('images/arrow_h.gif', 0) != -1) {
                document.getElementById('imgUNFCCC').src = 'images/arrow.gif';
            }
            else {
                document.getElementById('imgUNFCCC').src = 'images/arrow.gif';
            }

        }
    }
    if (document.getElementById('TrDIVKyoto') != null) {
        if (document.getElementById('TrDIVKyoto').style.display == 'block') {
            document.getElementById('TrDIVKyoto').style.display = 'none';
            document.getElementById('DivTitleKyoto').style.display = 'block';
            if (document.getElementById('imgKyoto').src.indexOf('images/arrow_h.gif', 0) != -1) {
                document.getElementById('imgKyoto').src = 'images/arrow.gif';
            }
            else {
                document.getElementById('imgKyoto').src = 'images/arrow.gif';
            }

        }
    }
    if (document.getElementById('TrDIVGas') != null) {
        if (document.getElementById('TrDIVGas').style.display == 'block') {
            document.getElementById('TrDIVGas').style.display = 'none';
            document.getElementById('DivTitleGas').style.display = 'block';
            if (document.getElementById('imgGas').src.indexOf('images/arrow_h.gif', 0) != -1) {
                document.getElementById('imgGas').src = 'images/arrow.gif';
            }
            else {
                document.getElementById('imgGas').src = 'images/arrow.gif';
            }
        }
    }

}