// Decide browser version
var ns4 = (document.layers)? true:false;
var ns6 = (document.getElementById)? true:false;
var ie4 = (document.all)? true:false;
var ie5 = false;

function findByName(name)
{
        if(ns4) obj = eval( 'document.' + name );
        else if(ie4) obj = eval( 'document.all.' + name );
        else if(ns6) obj = document.getElementById(name);
        return( obj );
}

// Make an object visible
function show(name) {
        obj = findByName( name );
        if( !obj ) alert( "unable to find " + name );
        if (ns4) obj.visibility = "show";
        else if (ie4) obj.style.display = "";
        else if (ns6) obj.style.display = "";
}

// Hides an object
function hide(name) {
        obj = findByName( name );
        if (ns4) obj.visibility = "hide";
        else if (ie4) obj.style.display = "none";
        else if (ns6) obj.style.display = "none";
}