var shownImage = null;
function showPreview(url, width, height){
	shownImage == url;
	var div = document.getElementById("imagepreview");
	div.style.margin = '0px auto';
	div.style.color = 'transparent';
	div.style.width = width + 'px';
	div.style.height = height + 'px';
	var img = new Image();
	img.src = '/images/progress_big.gif';
	div.innerHTML = '';
	div.appendChild(img);
	img.src = 'images/' + url;
  width = typeof(width) == "undefined" ? 100 : width;
  height = typeof(height) == "undefined" ? 100 : height;
//  document.getElementById("productinfoBody").style.visibility = 'hidden';  
	div.style.visibility = 'visible';
}
function hidePreview(){
	document.getElementById("imagepreview").style.visibility = 'hidden';
//  document.getElementById("productinfoBody").style.visibility = 'visible';
	shownImage = null;
	}