function validate(input)
{
var email=/^(\w+[\-\.])*\w+@(\w+\.)+[A-Za-z]+$/;
var numberonly =/\d/;
var notanumber =/\D/;

if(numberonly.test(input))
{
alert("number");
}
if(notanumber.test(input))
{
alert("not a number");
}

if(email.test(input))
{
alert("valid email");
}

}