function get_cookie(v){
	var c=document.cookie;
	v=v+"=";
	l=c.length;
	var a=0;
	while(a<l)	{
		var b=a+v.length;
		if(c.substring(a,b)==v){
			var n=c.indexOf(";",b);
			if(n==-1)n=l;
			return unescape(c.substring(b,n));
		}
		a=c.indexOf("",a)+1;
		if(a==0) break;
	}
	return null;
}

function set_cookie(n,v,e)
{
	ex=new Date();
	ex.setTime(ex.getTime()+(24*60*60*1000*(e==1?1000:e?e:-1)));
	document.cookie=n+"="+escape(v?v:0)+";expires="+ex.toGMTString()+";path=/";
}