function changeHowDidYouHear(selectValue) {
	if (selectValue == 'Other') {
		document.getElementById("otherDiv").style.display = "inline";
		document.getElementById("otherDiv").style.marginBottom = 12;
	} else {
		document.getElementById("otherDiv").style.display = "none";
	}
}

function validateLeadGenForm() {
	var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;

	if (document.getElementById("firstName").value.length == 0) {
		alert('Please enter your first name');
		document.getElementById("firstName").focus();
		return false;
	}  

	if (document.getElementById("lastName").value.length == 0) {
		alert('Please enter your last name');
		document.getElementById("lastName").focus();
		return false;
	}

	if (document.getElementById("jobTitle").value.length == 0) {
		alert('Please enter your title');
		document.getElementById("jobTitle").focus();
		return false;
	}  

	if (document.getElementById("phoneNumber").value.length == 0) {
		alert('Please enter your phone number');
		document.getElementById("phoneNumber").focus();
		return false;
	}

	if (document.getElementById("practiceName").value.length == 0) {
		alert('Please enter your practice\'s name');
		document.getElementById("practiceName").focus();
		return false;
	}  

	if (document.getElementById("practiceCity").value.length == 0) {
		alert('Please enter your practice\'s city');
		document.getElementById("practiceCity").focus();
		return false;
	}  

	if (document.getElementById("practiceState").selectedIndex == 0) {
		alert('Please select your practice\'s state');
		document.getElementById("practiceState").focus();
		return false;
	}

	if (document.getElementById("phoneNumber").value.length > 0) {
		document.getElementById("phoneNumber").value = parsePhoneNumber(document.getElementById("phoneNumber").value);
	}
	
	if (document.getElementById("phoneNumber").value.length > 0 && document.getElementById("phoneNumber").value.length != 12) {
		document.getElementById("phoneNumber").focus();
		return false;
	}

	if (document.getElementById("howDidYouHear").selectedIndex == 0) {
		alert('Please select how you heard about VetCentric');
		document.getElementById("howDidYouHear").focus();
		return false;
	}

	if (document.getElementById("emailAddress").value.length == 0) {
		alert('Please enter your email address');
		document.getElementById("emailAddress").focus();
		return false;
	}

    if (document.getElementById("emailAddress").value.search(emailRegEx) == -1) {
        alert('Please enter a valid email address');
		document.getElementById("emailAddress").focus();
        return false;
    }

	if (document.getElementById("confirmEmailAddress").value.length == 0) {
		alert('Please confirm your email address');
		document.getElementById("confirmEmailAddress").focus();
		return false;
	}

	if (document.getElementById("confirmEmailAddress").value != document.getElementById("emailAddress").value) {
		alert('The email addresses do not match');
		document.getElementById("emailAddress").focus();
		return false;
	}

	if (document.getElementById("bestContactTime").value.length == 0) {
		alert('Please enter the best time to contact you');
		document.getElementById("bestContactTime").focus();
		return false;
	}

	if (document.getElementById("needs").value.length > 255) {
		var alertMsg = 'Please limit your comment to 255 characters or less.  You have entered ' + document.getElementById("needs").value.length + ' characters.';
		alert(alertMsg);
		document.getElementById("needs").focus();
		return false;
	}

	return true;
}

function parsePhoneNumber(phoneString)
{
    var formattedString = "";
    var index = 0;
    var i;

    i = phoneString.length;
    while (index != i)
  	{
	   	if (isNaN(parseInt(phoneString.charAt(index)))) { 
	   	}
	    else { 
	    	formattedString = formattedString + phoneString.charAt(index);
	    }
	    index = index + 1;
	}
    if (formattedString.length == 10) {
		formattedString = formattedString.substring(0,3) + "-" + formattedString.substring(3,6) + "-" + formattedString.substring(6,10);
	}
    else {
	    formattedString = phoneString;
        alert("Please enter a valid phone number");
    }
    return formattedString;
}