// functions for manipulating cookies ///////////////////////////////////////////////////////////////
function cookie() {}

cookie.prototype.set = function(name,value)
{
	var argv = arguments; 
	var argc = 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" : "");
}

cookie.prototype.get = function(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 this.value(j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}
	return null;
}

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

cookie.prototype.remove = function(name)
{
	var exp = new Date();  
	exp.setFullYear(exp.getFullYear()-1);
	document.cookie = name + "=" + escape(this.get(name)) + "; expires=" + exp.toGMTString();
}

cookie.prototype.toString = function()
{
	return document.cookie;
}