/////////////////////////////////////////////functions////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
//test if single digit
function isDigit(value)
{
    //one occurance of a digit
    var regex = /^\d{1}$/;
    return regex.test(value);
}

//test if number
function isNumber(value)
{
    //One or more occurances of a digit
    var regex = /^[0-9]+$/;
    return regex.test(value);
}

//test if null or empty
function isNullOrEmpty(value)
{
    return (value == null || value == '')
}

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


function validate_regform()
{
	if (isNullOrEmpty(document.regform.first_name.value))
    {
		alert('Please enter your first name.');
		document.regform.first_name.focus();
		return false;
	}

	if (isNullOrEmpty(document.regform.last_name.value)) {
		alert('Please enter your last name.');
		document.regform.last_name.focus();
        return false;
	}

   /* if (isNullOrEmpty(document.regform.title.value))
    {
		alert("Please enter your job title.");
        document.regform.title.focus();
		return false;
	}
	*/

    if (isNullOrEmpty(document.regform.company.value))
    {
		alert("Please enter your company name.");
        document.regform.company.focus();
		return false;
    }
	
	// validate email
	if (isNullOrEmpty(document.regform.email.value))
    {
		alert('Please enter your email address.');
		document.regform.email.focus();
		return false;
	}
	else if (!/^([A-Z0-9]+[._]?){1,}[A-Z0-9-]+\@(([A-Z0-9]+[-]?){1,}[A-Z0-9]+\.){1,}([A-Z]{2,4}|museum)$/i.test(document.regform.email.value))
    {
        alert('Please enter a valid email address.')
        document.regform.email.focus();
		return false;
    }

	// validate phone
	if (isNullOrEmpty(document.regform.phone.value))
    {
		alert('Please enter your phone number.');
		document.regform.phone.focus();
		return false;
	}
	// else if (!/^\d{3}-\d{3}-\d{4}$/i.test(document.regform.phone.value))
    // {
        // alert('Please enter your phone number in the form 415-555-1212.')
        // document.regform.phone.focus();
		// return false;
    // }

	// check that country is picked
	if (isNullOrEmpty(document.regform.country.value))
    {
		alert('Please select your country.');
		document.regform.country.focus();
		return false;
	}

	// if US or Canada, check that state is picked too
	if ((document.regform.country.value == "US" || document.regform.country.value == "CA") && isNullOrEmpty(document.regform.state.value))
    {
		alert('Please select your state/province.');
		return false;
	}
	
    return true;
}


////////////////////////////////////////////////////////////////////////////////
//-------Length Validation---------------------------------------------------//
function isValidLength(element, fieldLength)
{
    var trimElement = element.value.replace(/ \s /, '');
    if (trimElement.length < fieldLength)
    {
        return false;
    }
    else
    {
        return true;
    }
}

function returnObjById( id )
{
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}

function showStates()
{
	
	document.getElementById('stateSelection').style.display = "block";
	document.getElementById('stateSelectionTwo').style.display = "block";
	
}


function hideStates()
{
	
	document.getElementById('stateSelection').style.display = "none";
	document.getElementById('stateSelectionTwo').style.display = "none";
	
}


function checkCountry()
{
	if( document.regform.country.value == "US" || document.regform.country.value == "CA" )
		 showStates();
		
	else
		 hideStates();
		
}