function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function changeImage(type,value)
{
	setCookie(type,value,2)
	var date = new Date();
	document.getElementById("image").src = document.getElementById("image").src+"&v="+date.getTime();
}