function isemail(s)
{
var r,re;
re = "^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)$";
r = s.match(re);
return (r == s) ? true : false;
}
function isalbum(s)
{
var r,re;
re = "^http://([\w-]+\.)+[\w-]+(/[\w-./?%&=]*)?s$";
r = s.match(re);
return (r == s) ? true : false;
}
function isinteger(s)
{
if (isNaN(parseInt(s, 10)))
return false;
else
return true;
}