/*
WM_setCookie(), WM_readCookie(), WM_killCookie()
A set of functions that eases the pain of using cookies.

Source: Webmonkey Code Library

Author: Nadav Savio
Author Email: nadav@wired.com
*/

// This next little bit of code tests whether the user accepts cookies.
var WM_acceptsCookies = false;

if (document.cookie == '') {
	document.cookie = 'WM_acceptsCookies=yes'; 												// Try to set a cookie.
  if (document.cookie.indexOf('WM_acceptsCookies=yes') != -1) {
		WM_acceptsCookies = true; 
  }																																	// If it succeeds, set variable
}
else { 																															// there was already a cookie
  WM_acceptsCookies = true;
}

function WM_setCookie (name, value, hours, path, domain, secure) {
  if (WM_acceptsCookies) { 																					// Don't waste your time if the browser doesn't accept cookies.
		var not_NN2 = (navigator && navigator.appName 
		       					&& (navigator.appName == 'Netscape') 
		       					&& navigator.appVersion 
		       					&& (parseInt(navigator.appVersion) == 2)) ? false : true;

		if (hours && not_NN2) { 																				// NN2 cannot handle Dates, so skip this part
	    if ((typeof(hours) == 'string') && Date.parse(hours)) { 			// already a Date string
				var numHours = hours;
	    }
			else if (typeof(hours) == 'number') { 												// calculate Date from number of hours
				var numHours = (new Date((new Date()).getTime() + hours*3600000)).toGMTString();
	    }
		}
		document.cookie = name + '=' + escape(value) + ((numHours)?(';expires=' + numHours):'') + ((path)?';path=' + path:'') + ((domain)?';domain=' + domain:'') + ((secure && (secure == true))?'; secure':''); // Set the cookie, adding any parameters that were specified.
	}
} 																																	// WM_setCookie


function WM_readCookie(name) {
	if (document.cookie == '') { 																						// there's no cookie, so go no further
		return false; 
  } 
  else { 																																	// there is a cookie
		var firstChar, lastChar;
		var theBigCookie = document.cookie;
		firstChar = theBigCookie.indexOf(name);																// find the start of 'name'
		var NN2Hack = firstChar + name.length;
		if ((firstChar != -1) && (theBigCookie.charAt(NN2Hack) == '=')) { 		// if you found the cookie
	    firstChar += name.length + 1; 																			// skip 'name' and '='
	    lastChar = theBigCookie.indexOf(';', firstChar); 										// Find the end of the value string (i.e. the next ';').
	    if (lastChar == -1)
	    	lastChar = theBigCookie.length;
	    return unescape(theBigCookie.substring(firstChar, lastChar));
		}
		else { 																																// If there was no cookie of that name, return false.
	    return false;
		}
  }	
} 																																				// WM_readCookie

function WM_killCookie(name, path, domain) {
  var theValue = WM_readCookie(name); 																		// We need the value to kill the cookie
  if (theValue) {
  	document.cookie = name + '=' + theValue + '; expires=Fri, 13-Apr-1970 00:00:00 GMT' + ((path)?';path=' + path:'') + ((domain)?';domain=' + domain:''); // set an already-expired cookie
  }
} 																																				// WM_killCookie

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

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