var objImagePlus = new Image();
objImagePlus.src = "/libraries/generic_content_images/tree_plus.sflb.ashx";
var objImageMinus = new Image();
objImageMinus.src = "/libraries/generic_content_images/tree_minus.sflb.ashx";

function doShowHideBranch(branchID) {
    if (document.getElementById(branchID)) {
        var objBranch = document.getElementById(branchID);

        if (objBranch.style.display == "") objBranch.style.display = "block";

        if (objBranch.style.display == "block") objBranch.style.display = "none";
        else objBranch.style.display = "block";
    }
}

function doPlusMinusNodeImage(imgPlusMinusNodeID) {
    objNodeImg = document.getElementById(imgPlusMinusNodeID);
    if (objNodeImg.src.indexOf('plus') > -1) objNodeImg.src = objImageMinus.src;
    else objNodeImg.src = objImagePlus.src;
}

function doShowHide(strID) {
    var element = document.getElementById(strID);
    if (element.style.display == "none") { element.style.display = "block"; }
    else { element.style.display = "none"; }
}