function apply()
	{
	  document.terms.accept_tc.disabled=true;
	  if(document.terms.min_age.checked==true
		 && document.terms.contract.checked==true 
		&& document.terms.accept_terms.checked==true
		&& document.terms.agreement.checked==true )
	  {
	    document.terms.accept_tc.disabled=false;
	  }
		else
	  {
	    document.terms.accept_tc.enabled=false;
	  }
	}

	function apply2()
	{
	 document.terms.receiver_email.disabled=true;
	 if(document.terms.receiver.checked == false)
		{
			document.terms.receiver_email.disabled=false;
			document.terms.receiver_email.value='<?php echo $receiver_email;?>';		
		}
	 else 
		{
			document.terms.receiver_email.disabled=true;
			document.terms.receiver_email.value='';
		}
	}