function showPhoto(theNum){
	var tImageID="img_" + theNum;
	var tDidID="did_" + theNum;
	var tImageObj=document.getElementById(tImageID);
	var tDidObj=document.getElementById(tDidID);
	document.getElementById('title_main').innerHTML=tImageObj.title.value;
	document.getElementById('img_main').src=tImageObj.src.value;
	document.getElementById('did_main').innerHTML=tDidObj.innerHTML;
	}