function printable(obj) {
	var objWindow;
	objWindow=window.open('','guide','width=500,height=600,scrollbars=yes,toolbar=yes');
	objWindow.document.writeln ('<html><head><title>Printable</title><link href="/harrypotter/harrypotter_p.css" rel="stylesheet" type="text/css" /></head>'
	+'<body onload="self.focus()" id="bod">'
	+obj.parentNode.innerHTML
	+'<div style="text-align:right"><a href="#" class="close" style="text-decoration:underline" id="close">Close window</a>'
	+'<scr'+'ipt src="/harrypotter/_js/print.js"> </scr'+'ipt></body></html>');
	objWindow.document.close();
}


function showInst(version) {
	var mac=document.getElementById('mac');
	var pc=document.getElementById('pc');
	
	document.getElementById("macpc").getElementsByTagName("li")[0].className
		
	if (version=='mac') {
		mac.style.display='block';
		pc.style.display='none';
		document.getElementById("macpc").getElementsByTagName("li")[0].className='on';
		document.getElementById("macpc").getElementsByTagName("li")[1].className='';
	} else {
		pc.style.display='block';
		mac.style.display='none';
		document.getElementById("macpc").getElementsByTagName("li")[1].className='on';
		document.getElementById("macpc").getElementsByTagName("li")[0].className='';
	}
}


function showTab(tab) {
	var curr = tab.id;
	
	for (var i=1;i<=3;i++) {
		if (document.getElementById('tab'+i).id != curr) {
			document.getElementById('tab'+i).className = "";
			document.getElementById('table'+i).style.display = "none";
		} else {
			document.getElementById('tab'+i).className = "on";
			document.getElementById('table'+i).style.display = "block";
		}
	}
}


function SetCookie (name, value) {
	var argv = SetCookie.arguments;
	var argc = SetCookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;

  document.cookie = name + "=" + escape (value) +
                ((expires == null) ? "" : ("; expires=" +
expires.toGMTString())) +
                ((path == null) ? "" : ("; path=" + path)) +
                ((domain == null) ? "" : ("; domain=" + domain)) +
                ((secure == true) ? "; secure" : "");
}

function HarryFunction(command, args) {
	pathname = location.pathname;
	
	myDomain = pathname.substring(0,pathname.lastIndexOf('/')) +'/';

  // set expiry date to 1 year from now.
  var largeExpDate = null;

  SetCookie('hpcookie',command,largeExpDate,myDomain);
}

function getCookieVal (offset) {
  var endstr = document.cookie.indexOf (";", offset);
  
  if (endstr == -1)
  	endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	
  while (i < clen) {
  	var j = i + alen;
  	
		if (document.cookie.substring(i, j) == arg)
		  return getCookieVal (j);
		i = document.cookie.indexOf(" ", i) + 1;

		if (i == 0) break; 
  }
  return null;
}

	//  Function to delete a cookie. (Sets expiration date to current date/time)
	//    name - String object containing the cookie name
	//

function DeleteCookie (name) {
	var exp = new Date();
	
	exp.setTime (exp.getTime() - 1);  // This cookie is history
	
	var cval = GetCookie (name);
	
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

