function validate_form(form)
{
	var required = new Array('email');

	for( var i=0; i<required.length; i++ )
	{
		if( !form.elements[required[i]].value )
		{
			alert("Please complete all required fields");
			
			return false; 
		}
	}

	if( !is_email( form.email.value ) )
	{
		alert("Please enter a valid email address");
		
		return false; 
	}

	return true;
}

function is_email(e)
{
	var ereg = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z09]+$/;
	
	return ereg.test(e); 
}