function Display(elementID) { 
    if (document.getElementById) { // DOM3 = IE5, NS6 
    //document.getElementById(elementID).style.visibility = 'visible'; 
    document.getElementById(elementID).style.display = "block";
    document.getElementById(elementID).style.position = "relative";
    document.getElementById(elementID).style.top = "0px";
    } 
    else { 
    if (document.layers) { // Netscape 4 
    //document.elementID.visibility = 'visible';
    document.elementID.display = "block";
    document.elementID.position = "relative";
    document.elementID.top = "0px";
    } 
    else { // IE 4 
    //document.all.elementID.style.visibility = 'visible'; 
    document.all.elementID.style.display = "block";
    document.all.elementID.style.position = "relative";
    document.all.elementID.style.top = "0px";
    } 
    } 
}
function Undisplay(elementID) { 
    if (document.getElementById) { // DOM3 = IE5, NS6 
    //document.getElementById(elementID).style.visibility = 'visible'; 
    document.getElementById(elementID).style.display = "none";
    document.getElementById(elementID).style.position = "absolute";
    document.getElementById(elementID).style.top = "-1000px";
    } 
    else { 
    if (document.layers) { // Netscape 4 
    //document.elementID.visibility = 'visible';
    document.elementID.display = "none";
    document.elementID.position = "absolute";
    document.elementID.top = "-1000ppx";
    } 
    else { // IE 4 
    //document.all.elementID.style.visibility = 'visible'; 
    document.all.elementID.style.display = "none";
    document.all.elementID.style.position = "absolute";
    document.all.elementID.style.top = "-1000ppx";
    } 
    } 
}