function showHide(id) {
    //check for just close
    var x = document.getElementById("divRB" + id);
    var y = document.getElementById("imgRB" + id);
    if (x.style.display == "none") {
        //hide all divs
        document.getElementById("divRB1").style.display = "none";
        document.getElementById("divRB2").style.display = "none";
        //change all icons
        document.getElementById("imgRB1").src = "/images/resourceBar/RB1Plus.gif";
        document.getElementById("imgRB2").src = "/images/resourceBar/RB2Plus.gif";
        //need to display this block
        x.style.display = "block";
        //change this icon
        y.src = "/images/resourceBar/RB"+id+".gif";
    } else {
    //need to hide this div
    x.style.display = "none";
    //change all icons
    document.getElementById("imgRB1").src = "/images/resourceBar/RB1Plus.gif";
    document.getElementById("imgRB2").src = "/images/resourceBar/RB2Plus.gif";
    //change this icon
    y.src = "/images/resourceBar/RB" + id + "Plus.gif";
       }

}