function getExpDate(days, hours, minutes) {
	var expDate = new Date();
	
	if (typeof days == "number" && typeof hours == "number" && typeof hours == "number") {
		expDate.setDate(expDate.getDate() + parseInt(days));
		expDate.setHours(expDate.getHours() + parseInt(hours));
		expDate.setMinutes(expDate.getMinutes() + parseInt(minutes));
		
		return expDate.toGMTString();
    }
	
	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));
}

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

function deleteCookie(name, path, domain) {
    if (getCookie(name)) {
		document.cookie = name + "="+
			((path) ? "; path=" + path : "") +
			((domain) ? "; domain="+domain : "") +
			"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}