function check()
	{
        if(document.publicat.product[0].checked == false && document.publicat.product[1].checked == false && document.publicat.product[2].checked == false)
		{
		alert("Please enter your subscription choice.");
		return false;
	    }
        if(document.publicat.version[0].checked == false && document.publicat.version[1].checked == false && document.publicat.version[2].checked == false)
		{
		alert("Please enter your preferred version.");
		return false;
	    }
        if(document.publicat.language[0].checked == false && document.publicat.language[1].checked == false && document.publicat.language[2].checked == false)
		{
		alert("Please enter your preferred language.");
		return false;
	    }
	if(document.publicat.name.value=="")
		{
		alert("Please enter your name.");
		document.publicat.name.focus();
		return false;
	    }
    if(document.publicat.firstname.value=="")
		{
		alert("Please enter your first name.");
		document.publicat.firstname.focus();
		return false;
	    }
   	email = document.publicat.email.value;
	if((pos=email.indexOf("@"))==-1)
		{
		alert("Please enter an e-mail address.");
		document.publicat.email.focus();
		return false;
		}
	else
		{
		newemail=email.substring(pos);
		if(newemail.indexOf(".")==-1)
			{
			alert("Please enter an e-mail address.");
			document.publicat.email.focus();
			return false;
			}
		}
    if(document.publicat.address.value=="")
		{
		alert("Please enter your address.");
		document.publicat.address.focus();
		return false;
	    }
    if(document.publicat.city.value=="")
		{
		alert("Please enter your city.");
		document.publicat.city.focus();
		return false;
	    }
    if(document.publicat.country.value=="")
		{
		alert("Please enter your country.");
		document.publicat.country.focus();
		return false;
	    }
	}