/*
 * File: cookieMonster.js
 * Include with: <script src="js/cookieMonster.js"></script>
 *
 * The above stated should be changed depending on which
 * catalog contains your html-file!
 * That could probably look something like this:
 *
 * <script src="../js/cookieMonster.js"></script> 
 * 
 * Think before you include it!
 */

//
// "Internal" function to return the decoded value of a cookie
//

function getCookieVal(offset) 
{
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
		endstr = document.cookie.length;
		
	return unescape(document.cookie.substring(offset, endstr));
}

//
//  Function to return the value of the cookie specified by "name".
//  name - String object containing the cookie name.
//  returns - String object containing the cookie value, or null if
//  the cookie does not exist.
//

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 create or update a cookie.
//  	name - String object containing the cookie name.
//  	value - String object containing the cookie value.  May contain
//  			any valid string characters.
//  	[expires] - Date object containing the expiration data of the cookie.  If
//  				omitted or null, expires the cookie at the end of the current session.
//  	[path] - String object indicating the path for which the cookie is valid.
//  			If omitted or null, uses the path of the calling document.
//  	[domain] - String object indicating the domain for which the cookie is
//  				valid.  If omitted or null, uses the domain of the calling document.
//
//  The first two parameters are required.  The others, if supplied, must
//  be passed in the order listed above.  To omit an unused optional field,
//  use null as a place holder.  For example, to call SetCookie using name,
//  value and path, you would code:
//
//      setCookie ("myCookieName", "myCookieValue", null, "/");
//
//  Note that trailing omitted parameters do not require a placeholder.
//
//  To set a secure cookie for path "/myPath", that expires after the
//  current session, you might code:
//
//      setCookie (myCookieVar, cookieValueVar, null, "/myPath", null, true);
//

function setCookie(name,value,expires,path,domain) 
{
  	document.cookie = name + "=" + escape (value) +
    	((expires) ? "; expires=" + expires.toGMTString() : "") +
    	((path) ? "; path=" + path : "") +
    	((domain) ? "; domain=" + domain : "");
}

//
// Function to write the form for choosing player
//

function writeForm(namePl)
{
	if (getCookie(namePl) == "real")
	{
		document.write("<form name='PlaySelect'>");
		document.write("<input type='radio' name='radiobutton' value='wmp'>MediaPlayer<br>");
    	        document.write("<input type='radio' name='radiobutton' value='real' checked>RealPlayer");
		document.write("</form>");
	}
	else
	{
		document.write("<form name='PlaySelect'>");
		document.write("<input type='radio' name='radiobutton' value='wmp' checked>MediaPlayer<br>");
    	document.write("<input type='radio' name='radiobutton' value='real'>RealPlayer");
		document.write("</form>");
	}
}