// JavaScript Document

//landing pages
function validateFormOnSubmit(theForm) {
var reason = "";

  reason += validateNames(theForm.f_nameFirst);
  reason += validateNames(theForm.f_nameLast);
  reason += validateCompany(theForm.f_companyName);
  reason += validateEmail(theForm.f_email);
  reason += validatePhone(theForm.f_phone);
  reason += validateState(theForm.f_companyState);
      
  if (reason != "") {
    alert("Some fields need correction:\n" + reason);
    return false;
  }

  return true;
}

//Free Trial Validation
function validateTrialFormOnSubmit(theForm) {
var reason = "";

  reason += validateNames(theForm.f_nameFirst);
  reason += validateNames(theForm.f_nameLast);
  reason += validateTitle(theForm.f_title);
  reason += validateCompany(theForm.f_companyName);
  reason += validatePhone(theForm.f_phone);
  reason += validateEmail(theForm.f_email);
  reason += validateState(theForm.f_companyState);
  
      
  if (reason != "") {
    alert("Some fields need correction:\n" + reason);
    return false;
  }

  return true;
}

//Demo Validation
function validateDemoFormOnSubmit(theForm) {
var reason = "";

  reason += validateNames(theForm.f_nameFirst);
  reason += validateNames(theForm.f_nameLast);
  reason += validateEmail(theForm.f_email);
  reason += validatePhone(theForm.f_phone);
  reason += validateCompany(theForm.f_companyName); 
  reason += validateState(theForm.f_companyState);
      
  if (reason != "") {
    alert("Some fields need correction:\n" + reason);
    return false;
  }

  return true;
}

//Contact Validation
function validateContactFormOnSubmit(theForm) {
var reason = "";

  reason += validateNames(theForm.f_nameFirst);
  reason += validateNames(theForm.f_nameLast);
  reason += validateEmail(theForm.f_email);
  reason += validatePhone(theForm.f_phone);
  reason += validateCompany(theForm.f_companyName); 
  reason += validateState(theForm.f_companyState);
      
  if (reason != "") {
    alert("Some fields need correction:\n" + reason);
    return false;
  }

  return true;
}


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

function validateEmail(fld) {
    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 = 'Yellow';
        error = "You didn't enter an email address.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'Yellow';
        error = "Please enter a valid email address.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = 'Yellow';
        error = "The email address contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}

//prevents users from using the default text values as their name

function validateNames(fld) {
	var error="";
	var tfld = trim(fld.value);
	
	if(fld.value == "first" || fld.value == "") {
		fld.style.background = 'Yellow';
        error = "Please enter your name.\n";
	} else if(fld.value == "last"  || fld.value == "") {
		fld.style.background = 'Yellow';
        error = "Please enter your name.\n";
	}
	return error;
}

//checks to ensure valid domestic or international number is used

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

   if (fld.value == "") {
        error = "You didn't enter a phone number.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length >= 10)) {
        error = "The phone number entered is incorrect. Make sure you included an area code.\n";
        fld.style.background = 'Yellow';
    }
    return error;
}

function validateTitle(fld) {
	var error="";
	var tfld = trim(fld.value);
	
	if(fld.value == "") {
		fld.style.background = 'Yellow';
        error = "Please enter your job title.\n";
	} 
	return error;
}

function validateCompany(fld) {
	var error="";
	var tfld = trim(fld.value);
	
	if(fld.value == "") {
		fld.style.background = 'Yellow';
        error = "Please enter your company name.\n";
	} 
	return error;
}

function validateState(fld) {
	var error="";
	var tfld = trim(fld.value);
	
	if(fld.value == "none") {
		fld.style.background = 'Yellow';
        error = "Please enter your company state.\n";
	} 
	return error;
}