$(document).ready(function(){ // Bind validation functions to the forms if jQuery is available
	
	if ($("#form_contact")) {
		$("#form_contact").submit( function() { return validateContact(); } );				
	}
	
});

//---------------------------------------------------------------------------------------------------------

function allValidChars(email) {
	var validchars										= "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
	for (var i=0; i < email.length; i++) {
		var letter										= email.charAt(i).toLowerCase();
		if (validchars.indexOf(letter) == -1) {
			return false;
		}
	}
	return true;
}

function isValidEmail(email) {
	if (email == null) { return false; }
	if (email.length < 9) { return false; }          								// there must be at least 9 characters
	if (!allValidChars(email)) { return false; }									// all characters must be valid
	if (email.indexOf("@") < 1) { return false; }    							// must contain @, and it must not be the first character
			
	// There must not be more than one @		
	var atcount											= 0;
	for (var i=0; i < email.length; i++) {
		var letter										= email.charAt(i).toLowerCase();
		if (letter == "@") { atcount++; }
	}
	if (atcount > 1) { return false; }																	
																					
	if (email.lastIndexOf("@") == email.length-1) { return false; }				// @ must not be the last character
	if (email.indexOf("..") >= 0) { return false; }                              // two dots in a row is not valid
    if (email.lastIndexOf(".") <= email.indexOf("@")) { return false; }         	// last dot must be after the @
    if (email.lastIndexOf(".") == email.length-1) { return false; }              // dot must not be the last character
    return true;
}

//--------------------------------------------------------------------------------------------------------- Contact

function validateContact() {
	
	
	$errorCount											= 0;
	$("#form_contact").find("p.error").remove();
	$(".error").removeClass("error");
	
	if ($("#name_first").val() == ''){
		$("#name_first").addClass("error").after("<p class=\"error\"><em>Please enter your first name</em></p>");									$errorCount++;
	} else if ($("#name_first").val().length > 64) {
		$("#name_first").addClass("error").after("<p class=\"error\"><em>Please make this <strong>64 characters or less</strong></em></p>");		$errorCount++;
	}
	
	if ($("#name_last").val() == ''){
		$("#name_last").addClass("error").after("<p class=\"error\"><em>Please enter your last name</em></p>");									$errorCount++;
	} else if ($("#name_last").val().length > 64) {
		$("#name_last").addClass("error").after("<p class=\"error\"><em>Please make this <strong>64 characters or less</strong></em></p>");		$errorCount++;
	}
	
	if (!isValidEmail($("#email").val())) {
		$("#email").addClass("error").after("<p class=\"error\"><em>Please enter a valid email address</em></p>");									$errorCount++;
	} else if ($("#email").val().length > 64) {
		$("#email").addClass("error").after("<p class=\"error\"><em>Please make this <strong>64 characters or less</strong></em></p>");			$errorCount++;
	}
	
	if ($("#question").val() == ''){
		$("#question").addClass("error").after("<p class=\"error\"><em>Please enter your question</em></p>");										$errorCount++;
	}
	
	$("#form_contact").find("p.error").fadeIn("slow");
	
	if ($errorCount > 0) { return false; }
	
}