var actDivID;

function showImage( imgID ) {
	divRef = document.getElementById( imgID );
	if ( divRef.style ) { divRef = divRef.style; }
	
	divRef.visibility = "visible";
	
	actDivID = imgID;
	
	return false;
}

function closeImage() {
	divRef = document.getElementById( actDivID );
	if ( divRef.style ) { divRef = divRef.style; }
	
	divRef.visibility = "hidden";	
}