// Form Validator
function validate_form ( )
{
    valid = true;

    if ( document.membership_form.member_firstname.value == "" )
    {
        document.getElementById("error").innerHTML="First name required";
		//alert ( "Please enter your name" );
        valid = false;
	}	
	if ( document.membership_form.member_firstname.value != "" ){
			document.getElementById("error").innerHTML="";	
    }
		    if ( document.membership_form.member_lastname.value == "" )
    {
        document.getElementById("error3").innerHTML="Last name required";
		//alert ( "Please enter a Message" );
        valid = false;
	}	
			if ( document.membership_form.member_lastname.value != "" ){
			document.getElementById("error3").innerHTML="";
    }

		
var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;

   var address = document.membership_form.member_email.value;
	 if(reg.test(address) == false) {
      document.getElementById("error2").innerHTML="Enter a valid email address";
      valid = false;
  }else{
	  document.getElementById("error2").innerHTML="";
  }

if (document.membership_form.member_email.value != document.membership_form.member_email2.value) {
		      document.getElementById("error4").innerHTML="Email Addresses do not match!";
    		valid = false;		
			}else{
	  document.getElementById("error4").innerHTML="";
  }
 
 return valid;
}