// this javascript checks the form fields to validate text entry where required

function chkFields()
{

if (document.mainform.c_name.value == "")
	{
		alert
		("Please tell us your name.");
		document.mainform.c_name.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("The email address is either empty or not a valid email format.");
		document.mainform.c_email.focus();
		return false;
	}
	
if (document.mainform.c_phone.value == "")
	{
		alert
		("Please tell us your phone number.");
		document.mainform.c_phone.focus();
		return false;
	}
	
if (document.mainform.c_profession.value == "")
	{
		alert
		("Please tell us your profession.");
		document.mainform.c_profession.focus();
		return false;
	}
	
typeOption = -1
		for (i=0; i<document.mainform.c_howhear.length; i++)
	{
			if (document.mainform.c_howhear[i].checked)
				typeOption = i
	}
		
	if (typeOption == -1)

	{
		alert("Please let us know how you heard about us.");
		document.mainform.c_howhear[1].focus();
		return false;
	}

}