var imageShowed = "1";

function showImage(id) {
	getElement('photo' + imageShowed).className = "hidden";
	getElement('thumb' + imageShowed).src = "thumbs/" + imageShowed + ".jpg";

	getElement('photo' + id).className = "photo";
	getElement('thumb' + id).src = "thumbs/" + id + "-o.jpg";
	
	imageShowed =id;
}


function getElement(elementID)
	{
    if (document.getElementById)
         return(document.getElementById(elementID));
    else if (document.layers)
        return(document.layers[elementID]);
    else if (document.all)
         return(document.all[elementID]);
	}