// MiniEmailRegistration.js
// --prabhu 08.13.07-
var busy = false;
function PrepareEmailReg(form){
  var email = form.emailAddress.value;
  var BooleanRes = isValidEmail(email);
    var dataString = "";
    if (!busy && BooleanRes == true) {
      
     if(form.firstName.value == "First name"){
       form.firstName.value = "";
       //alert(form.firstName.value);
     }else{
       form.firstName.value  = form.firstName.value.substr(0, 1).toUpperCase() + form.firstName.value.substr(1);
     }
     form.emailAddress.value = form.emailAddress.value.toLowerCase();
     //alert(form.emailAddress.value);
     
      for (var i=0; i < form.length; i++) {
        dataString = form.elements[i].name+ "=" + form.elements[i].value.toString() + "&" + dataString;
        
	 }
     //alert(dataString);
     form.subscribeStatus.value = "Subscribe"; 
     //alert(form.URL.value); 
      form.submit();
    }
}


function UnsubscribeEmail(form){
  alert("Unsubscribe Email testing");
  var email = document.getElementById('emailAddress').value;
  var BooleanRes = isValidEmail(email);
    if (!busy && BooleanRes == true) {  
    
    form.subscribeStatus = "Unsubscribe";
     form.submit();
    }
}


// newFunction
// isEmail (STRING s [, BOOLEAN emptyOK])
// whitespace characters
var whitespace = " \t\n\r";

// 
// Email address must be of form a@b.c ... in other words:
// * there must be at least one character before the @
// * there must be at least one character before and after the .
// * the characters @ and . are both required
function isValidEmail(s)
{  
	if (isEmpty(s)) return false;
   
	// is s whitespace?
	if (isWhitespace(s)) return false;
	    
	// there must be >= 1 character before @, so we
	// start looking at character position 1 
	// (i.e. second character)
	var i = 1;
	var sLength = s.length;

	// look for @
	while ((i < sLength) && (s.charAt(i) != "@"))
	{ i++
	}

	if ((i >= sLength) || (s.charAt(i) != "@")) return false;
	else i += 2;

	// look for .
	while ((i < sLength) && (s.charAt(i) != "."))
	{ i++
	}

	// there must be at least one character after the .
	if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
	else return true;
}

// Check whether string s is empty.
function isEmpty(s)
{   
	return ((s == null) || (s.length == 0))
}

// Returns true if string s is empty or 
// whitespace characters only.
function isWhitespace(s)
{   
	var i;

    // Is s empty?
    if (isEmpty(s)) return true;

    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.
    for (i = 0; i < s.length; i++)
    {   
		// Check that current character isn't whitespace.
		var c = s.charAt(i);

		if (whitespace.indexOf(c) == -1) return false;
    }
    // All characters are whitespace.
    return true;
}