function validate(frm) 
{
    if (frm.address.value.length == 0)
    	{
        alert("Please enter your address.");
        frm.address.focus();
        return false;
		}
	if (frm.email.value.length == 0)
    	{
        alert("Please enter an e-mail address.");
        frm.email.focus();
        return false;
	}
    if (frm.email.value.indexOf("@") == -1)
    	{
        alert("Please enter a valid e-mail address.");
        frm.email.focus();
        return false;
    	}
}