function setCookie(name, value, _expires)
{
        var expires = "";
        if (typeof expires != "undefined")
                expires = "; expires=" + _expires;
        document.cookie = name + "=" + value + expires;
}


function getCookie(name)
{
	var eq_name = name + "=";
	var ar = document.cookie.split(';');
	for(var i = 0; i < ar.length; i++)
	{
		var a = ar[i];
		while (a.charAt(0)==' ')
			a = a.substring(1, a.length);
		if (a.indexOf(eq_name) == 0)
			return a.substring(eq_name.length, a.length);
	}
	return "";
}

function isArray(obj)
{
	if (obj.constructor.toString().indexOf("Array") == -1)
		return false;
	return true;
}