function chkFields()
{

if (document.mainform.c_firstname.value == "")
	{
		alert
		("Please tell us your first name.");
		document.mainform.c_firstname.focus();
		return false;
	}
	
if (document.mainform.c_lastname.value == "")
	{
		alert
		("Please tell us your last name.");
		document.mainform.c_lastname.focus();
		return false;
	}

if (document.mainform.c_email.value == "" || document.mainform.c_email.value.indexOf("@") == -1 || document.mainform.c_email.value.indexOf(".") == -1 || document.mainform.c_email.value.indexOf(" ") != -1 || document.mainform.c_email.value.length < 6)
	
	{
		alert("Please enter a valid e-mail address.");
		document.mainform.c_email.focus();
		return false;
	}
	
if (document.mainform.c_address1.value == "")
	{
		alert
		("Please provide a home address.");
		document.mainform.c_address1.focus();
		return false;
	}
	
if (document.mainform.c_city.value == "")
	{
		alert
		("Please enter a city.");
		document.mainform.c_city.focus();
		return false;
	}
	
if ( document.mainform.c_state.selectedIndex == 0 )
    {
        alert ( "Please select a state." );
		document.mainform.c_state.focus();
		return false;
    }

if (document.mainform.c_zip.value == "")
	{
		alert
		("Please enter a zip code.");
		document.mainform.c_zip.focus();
		return false;
	}
	
}