window.onload = externalLinks;

function externalLinks() {
    if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");
    for (var i=0; i<anchors.length; i++) {
        var anchor = anchors[i];
        if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
        anchor.target = "_blank";
    }
}

function toggleLayer( whichLayer )
{
    var elem, vis;
    if( document.getElementById ) // this is the way the standards work
        elem = document.getElementById( whichLayer );
    else if( document.all ) // this is the way old msie versions work
        elem = document.all[whichLayer];
    else if( document.layers ) // this is the way nn4 works
        elem = document.layers[whichLayer];
        vis = elem.style;
    
    // if the style.display value is blank we try to figure it out here
    if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
        vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
        vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}

function showDiv( whichLayer )
{
    var elem, vis;
    if( document.getElementById ) // this is the way the standards work
        elem = document.getElementById( whichLayer );
    else if( document.all ) // this is the way old msie versions work
        elem = document.all[whichLayer];
    else if( document.layers ) // this is the way nn4 works
        elem = document.layers[whichLayer];
        vis = elem.style;
    
    vis.display = 'block';
}

function hideDiv( whichLayer )
{
    var elem, vis;
    if( document.getElementById ) // this is the way the standards work
        elem = document.getElementById( whichLayer );
    else if( document.all ) // this is the way old msie versions work
        elem = document.all[whichLayer];
    else if( document.layers ) // this is the way nn4 works
        elem = document.layers[whichLayer];
        vis = elem.style;
    
    vis.display = 'none';
}

function swapImage (id, folder, picture) {
    s = document.getElementById('mainpic');
    s.src = folder + picture;
}

function formSubmit(whichForm) {
    document.getElementById(whichForm).submit();
}