function setCookie(sName, sValue) {
        var today = new Date(), expires = new Date();
        expires.setTime(today.getTime() + (365*24*60*60*1000));
        document.cookie = sName + "=" + sValue + ";expires=" + expires.toGMTString();
}
function deleteCookie(name) {
	var exp=new Date();
	exp.setTime(exp.getTime() - 100000);
	var cval=getCookie(name);
	document.cookie=name+"="+cval+"; expires="+exp.toGMTString();
} 
function getCookie(sName) {
        var oRegex = new RegExp("(?:; )?" + sName + "=([^;]*);?");
 
        if(oRegex.test(document.cookie)) {
                return decodeURIComponent(RegExp["$1"]);
        } else {
                return null;
        }
}