function findOwner( evt )
{
    var node;
    if (isNav6)
    {
        node = evt.target;
        while (node)
        {
            if ( node.nodeType == Node.ELEMENT_NODE &&
                 node.nodeName == "DIV")
            {
                return node;
            }
            node = node.parentNode;
        }
    }
    else if (isIE4)
    {
        node = window.event.srcElement;
        while (node)
        {
            if (node.tagName == "DIV")
            {
                return node;
            }
            node = node.parentElement;
        }
    }
    return null;
}

function highlight( evt )
{
    var divObj = findOwner( evt );
    if (isNav6) { divObj.style.cursor = "pointer"; }
    divObj.style.color = "#72448C";
}

function dim( evt )
{
    var divObj = findOwner( evt );
    if (isNav6) { divObj.style.cursor = "default"; }
    divObj.style.color = "#4C4C4C";
}

function getObject( nameStr )
{
    if (isNav6)
    {
        return document.getElementById( nameStr );
    }
    else if (isIE4)
    {
        return document.all[nameStr];
    }
}


function showMenu( evt )
{
    var owner = findOwner( evt );
    var divNum;

    if (isNav6)
    {
        divNum = owner.attributes.getNamedItem("id").nodeValue;
    }
    else if (isIE4)
    {
        divNum = owner.id;
    }

    divNum = parseInt( divNum.substr(1));

    if (getIdProperty( "s" + divNum, "display") == "none" )
    {
        setIdProperty("s" + divNum, "display", "block");
        document.images["i" + divNum].src = "../images/minus.gif";
    }
    else
    {
        setIdProperty("s" + divNum, "display", "none");
        document.images["i" + divNum].src = "../images/plus.gif";
    }
}

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && document.all)? document.all : 
    oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}

function showall(set){
	var arrElements = getElementsByClassName(document, "div", "hideshow")
 for(var i=0; i<arrElements.length; i++){
			 if (set=="show")
    {
        setIdProperty("s" + i, "display", "block");
        document.images["i" + i].src = "../images/minus.gif";
    }
    else
    {
        setIdProperty("s" + i, "display", "none");
        document.images["i" + i].src = "../images/plus.gif";
    }
	}
		
}
function setupAction( node )
{
    if (isNav6)
    {
        node.addEventListener( "click", showMenu, false);
        node.addEventListener( "mouseover", highlight, false );
        node.addEventListener( "mouseout", dim, false );
        node.style.fontWeight = "bold";
    }
    else if (isIE4)
    {
        node.onclick = showMenu;
        node.onmouseover = highlight;
        node.onmouseout = dim;
    }
}

function setupEvents()
{
    var i;
    var theNode;

    for (i=0; i<vocabList.length; i++)
    {
        theNode = document.getElementById( "s" + i );
        setupAction( theNode );
    }
}

function setup()
{
    var i;
    var obj;

    for (i=0; i < 22; i++)
    {
        obj = getObject( "m" + i );
        setupAction( obj );
    }
}

setBrowser();