// JavaScript Document

// e-mail validation script
function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function valid(form)    {
 var reqFields = new Array(form.Your_Name,form.Your_Email,form.Recipient_Name,form.Recipient_Email);
 var fieldNames = new Array("Your Name, ","Your Email, ","Recipient's Name, ","Recipient's email, ");
 var flag = 0;
 var count = 0;
 var field = null;
 var failure = "The following fields are missing or incorrect:  \n";

 for (i=0;i<reqFields.length;i++)       {
  field = reqFields[i];
//Check the select list for a non-null value
   if (!field.value)     {               //Check for non-null
   flag = 1;
   failure = failure + fieldNames[i] + "\n";
   }
 }


 
 if (flag != 0)  {
  alert(failure);
  return false;
 } else  {
	   if ((!isEmailAddr(form.Your_Email.value))||(!isEmailAddr(form.Recipient_Email.value)))
	  {
	    flag = 1;
	    alert("* Email address format is invalid");
		return false;
	  }
	   
	  if (form.email.value.length < 3)
	  {
	    flag = 1;
	    alert("Please enter at least 3 characters in the \"email\" field.");
		return false;
	  }
	return true;  
  }

}