var rstring;

function checkterms ( form )
{
err=0;
rfld="";
msg="";

// check t&c are checked
cb=document.getElementById("terms");
if (!cb.checked) {
msg=msg+"You must agree to Terms & Conditions";
    if(rfld=="") rfld="terms";
	err=1;
	}
	
	
//now check if any errors
 if (err) {
	 alert(msg);
 document.getElementById(rfld).focus();
    return false ;

 }
 
 return true;


}
	
	
function checkform ( form )
{
	
// save posted fields
document.cookie='inv_fname='+document.getElementById('inv_fname').value;
document.cookie='inv_lname='+document.getElementById('inv_lname').value;
document.cookie='inv_company='+document.getElementById('inv_company').value;
document.cookie='inv_addr1='+document.getElementById('inv_addr1').value;
document.cookie='inv_addr2='+document.getElementById('inv_addr2').value;
document.cookie='inv_state='+document.getElementById('inv_state').value;
document.cookie='inv_zip='+document.getElementById('inv_zip').value;
document.cookie='inv_country='+document.getElementById('inv_country').value;
document.cookie='tel='+document.getElementById('tel').value;
document.cookie='email='+document.getElementById('email').value;
	
err=0;
rfld="";
msg="";
    // fname val
  if (document.getElementById("inv_fname").value == "") {
	msg=msg+"First Name missing";
    if(rfld=="") rfld="inv_fname";
	err=1;
    
    }
	
// lname val
  if (document.getElementById("inv_lname").value == "") {
	msg=msg+"\nLast Name missing";
    if(rfld=="") rfld="inv_lname";
	err=1;
    
    }
	
	  // address1 val
  if (document.getElementById("inv_addr1").value == "") {
	msg=msg+"\nAddress missing";
    if(rfld=="") rfld="inv_addr1";
	err=1;
    
    }
	
	  // city val
  if (document.getElementById("inv_addr2").value == "") {
	msg=msg+"\nTown/City missing";
    if(rfld=="") rfld="inv_addr2";
	err=1;
    
    }
	
 // city val
  if (document.getElementById("inv_zip").value == "") {
	msg=msg+"\nPostcode missing";
    if(rfld=="") rfld="inv_zip";
	err=1;
    
    }
	
	  // city val
  if (document.getElementById("inv_country").value == "") {
	msg=msg+"\nCountry missing";
    if(rfld=="") rfld="inv_country";
	err=1;
    
    }
    
     // email val
  if (document.getElementById("email").value == "") {
   msg=msg+"\nEmail missing";
     if(rfld=="") rfld="email";
    err=1 ;
    } else {
    var txt = document.getElementById("email").value;
     var n = txt.length;
     var ok = true;
     var cnt = 0;
     for (var i=0; i<n; i++)
     {
       var oneChar = txt.charAt(i);
       if (oneChar == '@')
       {
         if (cnt == 0)
         {
           cnt++;
         }
         else
         {
		
          msg=msg+"\nIllegal email";
		  if(rfld=="") rfld="email";
          err=1;
         }
       } 
     }
     if (!cnt)
     {
      
          msg=msg+"\nIllegal email";
		  if(rfld=="") rfld="email";
          err=1;
       }
	}
 
 
 
 
 //now check if any errors
 if (err) {
	 alert(msg);
 document.getElementById(rfld).focus();
    return false ;

 }

  return true ;
}