var cookieTimeoutInDays = 600;

//begin cookie management functions
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	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,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function cookieHasBeenSet(cookieName)
{
	return (readCookie(cookieName) != null);
}
//end cookie management functions

function popUpSurveyWindow(url)
{        
    return window.open(url, "Survey", 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=800,height=600,left = 0,top = 0');
}

function popSurvey(surveyUrl, cookieName)
{
	if (!cookieHasBeenSet(cookieName) && popUpSurveyWindow(surveyUrl) != null)
	{	
		createCookie(cookieName, "true", cookieTimeoutInDays);
	}
}