function togglePhoto(pic)
		{
			var i = document.getElementById(pic);
			
			if (i.className == 'photo_thumb'){
				i.src = 'images/portfolio/'+pic+'.jpg'; 
				i.className = 'photo';
			}
			else {
				if (i.className == 'photo'){
					i.src = 'images/portfolio/thumb/'+pic+'.jpg'; 
					i.className = 'photo_thumb';
				}	
			}
	  	}