///////////////////////////////////////////////////////
// JavaScript form validation functions script.  
///////////////////////////////////////////////////////
function isBlank(Ctrl) {  // returns true if blank	
	if (Ctrl.value.length < 1) return true;
	else if (isEmpty(Ctrl.value)) return true;
	else return false; }
function isEmpty(s) { // prevents entering empty strings
	for (var i = 0; i < s.length; i++) {
		var c = s.charAt(i);
		if ((c != ' ') && (c != '\n') && (c != '\t')) return false; 
	}
	return true; }
	
function isNotEmail(Ctrl){  // returns true if invalid email
   var err=0;
   emailString = Ctrl.value;
   if (window.RegExp) {
      var regexEmail = /^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.(([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$/;
      return !regexEmail.test(emailString);
   } else {
   	if (emailString.indexOf("@",1) == -1) err=1;  // need @ symbol
   	if (emailString.indexOf("@",1) != emailString.lastIndexOf("@")) err=1;  // only one @ symbol
   	if (emailString.indexOf(".",3) == -1) err=1;  // need at least one "."
   	if (emailString.lastIndexOf(".") == (emailString.length-1)) err=1;  // can't end with a "."
   	// check length
   	if (err==0) {
   		var at = (emailString.indexOf("@"))+1;
   		var lastDot = (emailString.lastIndexOf("."))+1;
   		// test to make sure there's at least one character between "at" and "lastDot"
   		if (lastDot - at == 1) err=1;
   	}
   }
   if (err==1) return true;
	else return false;
}	// end testSimpleEmail()

function errorAlert(e) {
    // If ErrorString "e" has content, there was at least one error; let them know.
	if (e.length > 0) {
		msg  = "____________________________________________________\n\n";
		msg += "  The form was not submitted for the following reason(s): \n";
		msg += "____________________________________________________\n";
		alert(msg + e);
		return false;
	} else {
        return true;
    }
} // end errorAlert()