function getCookieVal(offset){
	endstr=document.cookie.indexOf(";",offset);
	if (endstr == -1) {
		endstr=document.cookie.length;
	}
	return unescape(document.cookie.substring(offset,endstr));
}

function getcookie(name) {
	arg=name+"=";
	alen=arg.length;
	clen=document.cookie.length;
	i=0;
	while(i<clen){
		j=i+alen;
		if (document.cookie.substring(i,j)==arg){
			return getCookieVal(j);
		}
		i=document.cookie.indexOf(" ",i)+1;
		if (i==0) {
			break;
		}
	}
	return null;
}