// JavaScript Document

function validateFormOnSubmit(domForm) {
var reason = "";


  //Build a summary of errors
  reason += validateFirstName(domForm.FirstName);
  reason += validateLastName(domForm.LastName);
  reason += validateCity(domForm.City);
  reason += validateZip(domForm.ZipCode);
  reason += validatePhone(domForm.Phone1);
  reason += validateEmail(domForm.EmailAddress);


  //if summary error is not empty display the errors
  if (reason != "") {


    //display errors in errurSummary
    document.getElementById("errorSummary").innerHTML=reason;
    
    //scroll to top of page - to view errors
    window.scrollTo(0,0);
   	
    //stop processing the page
    return false;
    
    
  } else { //clear any error messages that may have been generated
  
  	document.getElementById("errorSummary").innerHTML='';
  	
  }
  
  
  
  
  //validate the employment questionaire section
  //start with the radio buttons
  
  var reason = "";
  
  reason += rbValidation(domForm.rbPrevEmp);
  reason += rbValidation(domForm.rbPrevApp);
  reason += rbValidation(domForm.rbOver18);
  reason += rbValidation(domForm.rbDL);
  reason += rbValidation(domForm.rbPrevEmp);
  reason += rbValidation(domForm.rbAuto);
  reason += rbValidation(domForm.rbAutoIns);
  reason += rbValidation(domForm.rbComputer);
  reason += rbValidation(domForm.rbPrinter);
  reason += rbValidation(domForm.rbInternet);


  if (reason != "" ) {
  	reason = "<li>Please review your selections, all fields are required.</li>";
  	document.getElementById("incuestaSummary").innerHTML = reason;
	
	  //scroll window to error message
  	scrollToPosition()
  	
  	//stop processing the page
  	return false;
  	
  } else { //clear any messages that have been generated
  
  	document.getElementById("incuestaSummary").innerHTML = '';
  	
  }
  
  
  
  //Validate the Drop Down Lists
  reason = "";
  reason = validateDDL(domForm);
  
  if (reason != "" ){
  
 	document.getElementById("rError").innerHTML = reason;  
  	return false;
  
  }
  
  
  //Validate the peformance checkbox
  reason = "";
  reason = validatePerf(domForm);
  if( reason != "" ) {
  	document.getElementById("pError").innerHTML = reason;
  	return false;
  }
  
      
   return true; //continue processing the form
}




//Validation functions:

function validateFirstName(fld) {  //first name validation
    var error = "";

    if (fld.value.length == 0) {
        fld.style.background = '#FFCCCC';
        error = "<li>First Name is a required field.</li>"
    } else {
        fld.style.background = 'White';
    }
    return error;
}



function validateLastName(fld) { //last name validation
    var error = "";

    if (fld.value.length == 0) {
        fld.style.background = '#FFCCCC';
        error = "<li>Last Name is a required field.</li>"
    } else {
        fld.style.background = 'White';
    }
    
    return error;
    
} 



function validateCity(fld) { //city validation
	var error = "";
	
	if( fld.value.length == 0 ){
		fld.style.background = '#FFCCCC';
		error = "<li>City is a required field.</li>"
	} else {
		fld.style.background = 'White';
	}
	
	return error;
}


function validateZip(fld) { //zip code valiation
	var error = "";
	
	if( fld.value.length == 0 ){
		fld.style.background = '#FFCCCC';
		error = "<li>Zip Code is a required field.</li>"
	} else {
		fld.style.background = 'White';
	}
	
	return error;
}






function trim(s) { //parses the provided string as listed below

  return s.replace(/^\s+|\s+$/, '');
  
}



function validateEmail(fld) { //email validation
    var error = "";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;

    if (fld.value == "") {
        fld.style.background = '#FFCCCC';
        error = "<li>Email address is a required field.</li>";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = '#FFCCCC';
        error = "<li>Please enter a valid email address.</li>";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = '#FFCCCC';
        error = "<li>The email address contains illegal characters.</li>";
    } else {
        fld.style.background = '#FFFFFF';
    }
    return error;
}




function validatePhone(fld) { //phone validation

    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');

   if (fld.value == "") {
        error = "<li>Primary Phone is a required field.</li>";
        fld.style.background = '#FFCCCC';
    } else if (isNaN(parseInt(stripped))) {
        error = "<li>The phone number contains illegal characters.</li>";
        fld.style.background = '#FFCCCC';
    } else if (!(stripped.length == 10)) {
        error = "<li>The phone number is the wrong length. Make sure you included an area code.</li>";
        fld.style.background = '#FFCCCC';
     } else {
        fld.style.background = '#FFFFFF';
    }
    return error;
}



function rbValidation(groupName) { //radio button validation
var rbChecked;
var error = "";

	for (var i=0; i < groupName.length; i++) {
	
		if (groupName[i].checked) {
		rbChecked = "1"
		}
		
	}	
	
	if(!rbChecked){ //if group1Checked does not equal null
		error = "1";	
	} 

	return error;
}




//Drop Down List Validation Functions
function validateDDL(objForm)
{
	var error = "";
	var ref = objForm.Referer.value

	if (ref == 'd0') {
		//handle employee referral default
		return error = "<li><em>--Select--</em>, is not a valid selection. Please review your choice.</li>";
	}
	
	if (ref == 'd6') {
	
	 	if (objForm.rEmpFName.value == '' || objForm.rEmpLName.value == '' || objForm.rEmpCity == '' ) {
			//handle employee referral
			return error = "<li>All Employee Referral fields are required.</li>";	
		}
	}
	
	
	if (ref == 'd4' && objForm.rNewspaper.value == '') {
		//handle newspaper referral
		return error = "<li>Please enter the name of the newspaper.</li>";
		
	}
	
	if (ref == 'd5' && objForm.rWebsite.value == '' ){
		//handle other referral
		return error = "<li>Please enter the website address.</li>";
	}
	
	if (ref == 'd8' && objForm.otherLabel.value == '' ){
		//handle other referral
		return error = "<li>Please specify <em>other</em>.</li>";
	}
	

	return error;
}


function validatePerf(objForm) {
	
	var error = "";
	var perf = objForm.cbPerform;
	if (perf.checked == 1 && objForm.jobFunctionOther.value == '') {
		//handle work capacity error
		error = "<li>This is a required field.</li>";
	}

	return error;
}





function scrollToPosition(){
  //This function scrolls to the indicated element on the form.
  //var theElement = document.formName.elementName; // or document.getElementById("idName")
  var theElement = document.getElementById("incuestaHeader")
  elemPosX = theElement.offsetLeft
  elemPosY = theElement.offsetTop;
  theElement = theElement.offsetParent;
  while(theElement != null){
    elemPosX += theElement.offsetLeft 
    elemPosY += theElement.offsetTop;
    theElement = theElement.offsetParent;
  }
  window.scrollTo(elemPosX ,elemPosY);
}