/* File: nav2.js
   Used my navigation bar at left of page.
   Author: Sigrid Illes
   19-Mar-06 */

window.onload=roll;

function roll(id)
{
    var d = document.getElementById(id);
    for (var i = 1; i<=10; i++)
    {
        if( document.getElementById('menu'+i) )
        {
            document.getElementById('menu'+i).style.display='none';
        }
    }
    if( d )
    {
        d.style.display='block';
    }
}

function preLoadImages()
{
    // If browser is very old, don't preload...
    if (!document.images) return null;
    var misc_images;
     misc_images =  makeArray_1(misc_images,2); // Misc. image objects...
    misc_images[ 0 ].src = "media/mna_logo20.gif";
    misc_images[ 1 ].src = "media/mnalogo4.gif";
}

// Make image objects for misc. images...
function makeArray_1( x, n )
{
    x = new Array( n );
    for( var i = 0; i<n; i++)
    {
        x[i]= new Image();
    }
    return x;
}

preLoadImages();