function validate(theForm)
{
	
	if (theForm.txtname.value == "")
	{
	alert("You must enter a Name.");
	theForm.txtname.focus();
	return (false);
	}
	if (theForm.txtemail && (theForm.txtemail.value == ""))
	{
	alert("You must enter Your Email.");
	theForm.txtemail.focus();
	return (false);
	}
	    // test if valid email address, must have @ and .
		var checkEmail = "@.";
		var checkStr = theForm.txtemail.value;
		var EmailValid = false;
		var EmailAt = false;
		var EmailPeriod = false;
		for (i = 0;  i < checkStr.length;  i++)
		{
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkEmail.length;  j++)
		{
		if (ch == checkEmail.charAt(j) && ch == "@")
		EmailAt = true;
		if (ch == checkEmail.charAt(j) && ch == ".")
		EmailPeriod = true;
			  if (EmailAt && EmailPeriod)
				break;
			  if (j == checkEmail.length)
				break;
			}
			// if both the @ and . were in the string
		if (EmailAt && EmailPeriod)
		{
				EmailValid = true
				break;
			}
		}
		if (!EmailValid)
		{
		alert("Please enter Valid Email Address");
		theForm.txtemail.focus();
		return (false);
		}
	if (theForm.txttele && (theForm.txttele.value == ""))
	{
	alert("You must enter Telefoon number.");
	theForm.txttele.focus();
	return (false);
	}
	else
	{
		return true;
		//form.action='/contacts';
		//form.submit();
	}
	
}