function showsub(idname) {document.getElementById(idname).style.display = 'block'; setCookie(idname,1,null)}
function hidesub(idname) {document.getElementById(idname).style.display = 'none'; setCookie(idname,0,null)}

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());
}