function addEmailToLink(obj) {
	var email=document.getElementById('email');
	if(email) {
		if(email.value!='') {
			obj.href+='?email='+email.value
		}
	}
}

function validate_form (obj_form) {
	obj_form.email.value = trim ( obj_form.email.value );
	obj_form.password.value = trim ( obj_form.password.value );

	if (obj_form.email.value == "") {
		obj_form.email.focus();
		alert("Email is a required field.");
		return false;
	}
	if (obj_form.password.value == "") {
		obj_form.password.focus();
		alert("Password is a required field.");
		return false;
	}
	return true;
}