function getObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
        // W3C DOM
        //alert("W3C DOM");
        return document.getElementById(objectId);
    } else if (document.all && document.all(objectId)) {
        //alert("MSIE 4 DOM");
        // MSIE 4 DOM
        return document.all(objectId);
    } else if (document.layers && document.layers[objectId]) {
        // NN 4 DOM.. note: this won't find nested layers
        return document.layers[objectId];
    } else {
        //alert(objectId);
        return false;
    }
}

function showList(a, ashow, b, bshow){
	getObject(a).className = "active";
	getObject(b).className = "";
	getObject(ashow).style.display = "block";
	getObject(bshow).style.display = "none";
}

function show(a, ashow, b, bshow){
	getObject(a).className = "";
	getObject(b).className = "gray";
	getObject(ashow).style.display = "block";
	getObject(bshow).style.display = "none";
}

function showIntro(ashow, bshow){
	getObject(ashow).style.display = "block";
	getObject(bshow).style.display = "none";
}