/* Utility functions to create and manipulate cookies, so we can create a unique session id for users */
function setCookie(cname, cvalue, exhours) {
    document.cookie = cname + "=" + cvalue + ";path=/";
}

function clearCookie(cname) {
    var d = new Date();
    var expires = "expires="+d.toUTCString();
    document.cookie = cname + "=null; " + expires + ";path=/";
}

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

function getSessionId()
{
	return getCookie("acadian_sessionid");
}

function clearSessionId()
{
	return clearCookie("acadian_sessionid");
}