function checkContactForm()
{
	var client_name = document.getElementById('client_name').value;
	var client_email = document.getElementById('client_email').value;
	
	if ( client_name.length==0 || client_name.length==0 || client_email.length==0 )
	{
		alert("You have to fill the required fields");
		return false;
	}  // if
	
	if ( (client_email.indexOf(".")>2) && (client_email.indexOf("@")>0) )
	{
		return true;
	}
	else
	{
		alert("You have to enter a valid email address");
		return false;
	} // if
	
} // doContact