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) {

	var argv = SetCookie.arguments;

	var argc = SetCookie.arguments.length;

	var expires = (2 < argc) ? argv[2] : null;

	var path = (3 < argc) ? argv[3] : null;

	var domain = (4 < argc) ? argv[4] : null;

	var secure = (5 < argc) ? argv[5] : false;
	var cookie=name + "=" + escape (value) +((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +	((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain)) +	((secure == true) ? "; secure" : "");
	document.cookie = cookie;
	

}

// this deletes the cookie when called
function DeleteCookie( name, path, domain ) {
if ( GetCookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}