var s_cookie = {

	getCookieVal: function(offset) {
		var endstr = document.cookie.indexOf (";", offset);  
		if (endstr == -1)    
		endstr = document.cookie.length;  
		return unescape(document.cookie.substring(offset, endstr));
	},
	
	getCookie: 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.getCookieVal (j);    
			i = document.cookie.indexOf(" ", i) + 1;    
			if (i == 0) break;   
		}  
		return null;
	},
	
	setCookie: function(name, value) {  
		var argv = this.setCookie.arguments;  
		var argc = this.setCookie.arguments.length;  
		var expDays = (argc > 2) ? argv[2] : null;
		var exp;
		if (expDays != null) {
			exp = new Date(); 
			exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
		}
		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) + 
		((expDays == null) ? "" : ("; expires=" + exp.toGMTString())) + 
		((path == null) ? "" : ("; path=" + path)) +  
		((domain == null) ? "" : ("; domain=" + domain)) +    
		((secure == true) ? "; secure" : "");
	},
	
	deleteCookie: function(name) {  
		var exp = new Date();  
		exp.setTime (exp.getTime() - 1);  
		var cval = this.getCookie (name);  
		document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
	}

}