// Copyright � 2001 by Apple Computer, Inc., All Rights Reserved.

//

// You may incorporate this Apple sample code into your own code

// without restriction. This Apple sample code has been provided "AS IS"

// and the responsibility for its operation is yours. You may redistribute

// this code, but you are not permitted to redistribute it as

// "Apple sample code" after having made changes.

// email



function checkEmail (strng) {

	var error="";

	if (strng == "") {

	   error = "You didn't enter an email address.\n";

	}

	    var emailFilter=/^.+@.+\..{2,3}$/;

	    if (!(emailFilter.test(strng))) { 

	       error = "Please enter a valid email address.\n";

	    }

	    else {

	//test email for illegal characters

	       var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/

	         if (strng.match(illegalChars)) {

	          error = "The email address contains illegal characters.\n";

	       }

	    }

	return error;    

}



// phone number - strip out delimiters and check for 10 digits



function checkPhone (strng) {

	var error = "";

	if (strng == "") {

	   error = "You didn't enter a phone number.\n";

	}

	var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters

	    if (isNaN(parseInt(stripped))) {

	       error = "The phone number contains illegal characters.";

	    }

	    if (!(stripped.length == 10)) {

		error = "The phone number is the wrong length. Make sure you included an area code.\n";

	    } 

	return error;

}





// password - between 6-8 chars, uppercase, lowercase, and numeral



function checkPassword (strng) {

	var error = "";

	if (strng == "") {

	   error = "You didn't enter a password.\n";

	}

	    var illegalChars = /[\W_]/; // allow only letters and numbers

	    if ((strng.length < 6) || (strng.length > 8)) {

	       error = "The password is the wrong length.\n";

	    }

	    else if (illegalChars.test(strng)) {

	      error = "The password contains illegal characters.\n";

	    } 

	   else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) {

	       error = "The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n";

	    }  

	return error;    

}    





// username - 4-10 chars, uc, lc, and underscore only.



function checkUsername (strng) {

	var error = "";

	if (strng == "") {

	   error = "You didn't enter a username.\n";

	}

	    var illegalChars = /\W/; // allow letters, numbers, and underscores

	    if ((strng.length < 4) || (strng.length > 10)) {

	       error = "The username is the wrong length.\n";

	    }

	    else if (illegalChars.test(strng)) {

	    error = "The username contains illegal characters.\n";

	    } 

	return error;

}       





// non-empty textbox



function isEmpty(strng,strMessage) {

var error = "";

  if (strng.length == 0) {

  	 if (strMessage.length == 0) {

     	error = "The mandatory text area has not been filled in.\n";

	 } else {

	 	error = strMessage;

	 }

  }

return error;	  

}



// was textbox altered



function isDifferent(strng) {

var error = ""; 

  if (strng != "Can\'t touch this!") {

     error = "You altered the inviolate text area.\n";

  }

return error;

}



// exactly one radio button is chosen

	

function checkRadio(checkvalue) {

var error = "";

   if (!(checkvalue)) {

       error = "Please check a radio button.\n";

    }

return error;    

}



// valid selector from dropdown list



function checkDropdown(choice) {

var error = "";

    if (choice == 0) {

    error = "Please choose a province from the drop-down menu.\n";

    }    

return error;

}