//Validating the Signup Form

function validate_signupform ()
{
    valid = true;
	var emailPat=/^(.+)@(.+)\.(.+)$/;

   
	
    if ( document.signupform.email.value == "" )
    {
        alert ( "Please enter your Email Address" );
        valid = false;
    }
	else if (document.signupform.email.value.search(emailPat)==-1)
  	{
    alert ( "Please enter a valid Email Address" );
        valid = false;
 	}
      
	
   
	else{
	alert("Thank you for subscribing our Newsletter.");
	}
    return valid;
   
}