function isEmailAddr (s){ 
	var rv = false
	if ((s == null) || (s.length == 0)) 
       	rv = false;
 	 else {
		var reEmail =/([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		
		rv = reEmail.test(s)
    }
	if(rv){
		return rv
	}else{
		return false
	}
}
 
function samplesValidation(theForm){
	if (theForm.name.value == ""){
    	alert("Please enter your name.");
    	theForm.name.focus();
    	return (false);
  	}
  	if (!isEmailAddr(theForm.email_from.value)){
    	alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    	theForm.email_from.focus();
    	return (false);
 	}
	if (theForm.phone.value == ""){
    	alert("Please enter your phone number.");
    	theForm.phone.focus();
    	return (false);
  	}
	if (theForm.Steet_name.value == ""){
    	alert("Please enter your street name and number.");
    	theForm.Steet_name.focus();
    	return (false);
  	}
	if (theForm.Suburb.value == ""){
    	alert("Please enter your suburb.");
    	theForm.Suburb.focus();
    	return (false);
  	}
	if (theForm.City.value == ""){
    	alert("Please enter your city.");
    	theForm.City.focus();
    	return (false);
  	}
	if (theForm.Postal_Code.value == ""){
    	alert("Please enter your postal code.");
    	theForm.Postal_Code.focus();
    	return (false);
  	}
	
	return (true);
}