function onLoadDocument() {
  viewer.innerHTML=loader.document.body.innerHTML;
  divLoader.innerHTML='';
}

function onLoadDocumentIntoId(visor) {
  viewer.innerHTML = document.getElementById(visor).document.body.innerHTML;
  divLoader.innerHTML='';
}

function swapImages(smallImage, bigImage) {
	var img;
	img = document.getElementById(bigImage).src;
	
	document.getElementById(bigImage).src=document.getElementById(smallImage).src;
	document.getElementById(smallImage).src=img;
}