function check_event_form()
{
	var fname = document.getElementById('fname');
	var lname = document.getElementById('lname');
	var add1 = document.getElementById('add1');
	var city = document.getElementById('city');
	var state = document.getElementById('state');
	var zip = document.getElementById('zip');
	var email = document.getElementById('email');
	
	if (fname.value == '')
	{
		alert('Please enter your first name.');
		fname.focus();
		return false;
	}
	if (lname.value == '')
	{
		alert('Please enter your last name.');
		lname.focus();
		return false;
	}
	if (add1.value == '')
	{
		alert('Please enter your address.');
		add1.focus();
		return false;
	}
	if (city.value == '')
	{
		alert('Please enter your City');
		city.focus();
		return false;
	}
	if (state.value == '')
	{
		alert('Please enter your state.');
		state.focus();
		return false;
	}
	if (zip.value == '' || !isNumeric(zip.value))
	{
		alert('Please enter a valid 5 digit zip code.');
		zip.focus();
		return false;
	}
	if (email.value == '')
	{
		alert('Please enter your email address.');
		email.focus();
		return false;
	}		
	
	return true;
}

function isNumeric(sText)
{
	var ValidChars = "0123456789.";
   	var IsNumber=true;
  	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++) 
	{ 
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) 
			IsNumber = false;
	}
   	return IsNumber;
}