// 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;
}       

function isEmpty(mytext) {
var re = /^\s{1,}$/g; //match any white space including space, tab, form-feed, etc. 
if ((mytext.value.length==0) || (mytext.value==null) || ((mytext.value.search(re)) > -1)) {
return true;
}
else {
return false;
}
}

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 an option from the drop-down list to get an estimate.\n";
    }    
return error;
}    

function ValidateQuoteForm()
{
	var theForm = document.forms.quoteForm;
	var why = "";

	why += checkDropdown(theForm.interest.selectedIndex);
    if (why != "") 
    {
       alert(why);
       theForm.interest.focus();
       return false;
    }

	return true;
}

function DoSubmit()
{
	if (ValidateQuoteForm()) 
	{
		document.quoteForm.submit();
	}
}

function ValidateContactForm()
{
	var theForm = document.forms.contactForm;	

	if (isEmpty(theForm.FullName))
	{
		alert("Please enter a valid name");
		theForm.FullName.focus();
		return false;
	}

	if (checkPhone(theForm.Phone.value))
	{
		alert("Please enter a valid Phone Number");
		theForm.Phone.focus();
		return false;
	}
	
	if (checkEmail(theForm.email.value))
	{
		alert("Please enter a valid Email id");
		theForm.email.focus();
		return false;
	}
	
	var why = "";

	why += checkDropdown(theForm.interestText.selectedIndex);
    if (why != "") 
    {
       alert(why);
       theForm.interestText.focus();
       return false;
    }
	
	return true;
}