function checkcontact()
{
if (document.getElementById('realname').value.length<1)
	{
	alert ('Please enter your name.');
	return false;
	}


if (document.getElementById('email').value.length<1)
	{
	alert ('Please enter your email address.');
	return false;
	}

if (document.getElementById('email').value.length<6)
	{
	alert ('Email length not acceptable');
	return false;
	}

  var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.getElementById('email').value;
   if (address.length>0)
   	{
   	if(reg.test(address) == false) 
   		{
   		   alert('Invalid Email Address');
   		   return false;
   		}
	}

if (document.getElementById('tel').value.length<6)
	{
	alert ('Telephone Number too short!');
	return false;
	}



if (document.getElementById('message').value.length<1)
	{
	alert ('Please enter your message.');
	return false;
	}

}