/**************************************************

Allows the creation, deletion and reading of cookies on a clients browser.
    
    
Code modified from http://www.quirksmode.org/js/cookies.html

**************************************************/

function CookieManager(){
}
CookieManager.prototype.erase = CookieManager_erase;
CookieManager.prototype.create= CookieManager_create;
CookieManager.prototype.read= CookieManager_read;

function CookieManager_create(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 CookieManager_read(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 CookieManager_erase(name) {
	this.create(name,"",-1);
}