function openimgwindow(jsimg,jswid,jshei){
newtag = '<p>Click on the image to return to the thumbnails.</p>';
newtag = newtag + '<p><img src="'+jsimg+'" width="'+jswid+'" height="'+jshei+'" alt="" onclick="closeimgwindow()" class="clickable" /></p>';
document.getElementById('imgholder').innerHTML = newtag;
document.getElementById('imgholder').style.display='block';
document.getElementById('gall').style.display='none';
}

function closeimgwindow(){
document.getElementById('imgholder').style.display='none';
document.getElementById('gall').style.display='block';
}

function startgall(){
document.getElementById('gallwarn').style.display='none';
document.getElementById('gall').style.display='block';
}