function unhide(divid) {
  var item = document.getElementById(divid);
  if (item) {item.className=(item.className=='hidden')?'unhidden':'hidden';}
}

function getHeight() {	
	return window.innerHeight ? window.innerHeight : (document.getBoxObjectFor ? Math.min(document.documentElement.clientHeight, document.body.clientHeight) : ((document.documentElement.clientHeight != 0) ? document.documentElement.clientHeight : (document.body ? document.body.clientHeight : 0)));
}	

photo = {	
	previous : function() {
		alert(document.body.scrollHeight);
		
		
		
	},
	
	next : function() {
		alert(document.body.scrollWidth);
		
		
		
	},
	
	close : function() {
		unhide('picturebox'); unhide('previewbox');
		
		
	},
	
	preview : function(picname) {
		document.getElementById('previewboxinside').style.height = getHeight() - 56 + "px";
		document.getElementById('picturetable').style.height = getHeight() - 95 + "px";
		unhide('previewbox'); unhide('picturebox');
		

	}
}