/******************************************************
 *  Tipcode.js - v. 1.00                              *
 *  by Co Wilders                                     *
 *  Copyright (c) 2000 Fim@x                          *
 *  http://www.fimax.nl                               *
 *                                                    *
 ******************************************************/

browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || 
            ((navigator.appName == "Microsoft Internet Explorer") && 
              (parseInt(navigator.appVersion) >= 4 )))


function Form_check () {
    if (browser) {
      if (document.layers) {
        if (document.layers['akkoordencontrol'].document.forms['Tipcodeform'].tipcode.value == "") {
          alert("Fill in a Tipcode.");
          document.layers['akkoordencontrol'].document.forms['Tipcodeform'].tipcode.focus();
          return false;
        }      

        for (var i=0, len=document.layers['akkoordencontrol'].document.forms['Tipcodeform'].tipcode.value.length, valid='1234567890-qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM ' ; i<len ; i++) {
          if (valid.indexOf(document.layers['akkoordencontrol'].document.forms['Tipcodeform'].tipcode.value.substring(i,i+1)) == -1) {
            alert("Fill in a valid Tipcode.");
            document.layers['akkoordencontrol'].document.forms['Tipcodeform'].tipcode.focus();
            return false;
          }      
        }

      }
      else {
        if (document.Tipcodeform.tipcode.value == "") {
          alert("Fill in a Tipcode.");
          document.Tipcodeform.tipcode.focus();
          return false;
        }

        for (var i=0, len=document.Tipcodeform.tipcode.value.length, valid='1234567890-qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM ' ; i<len ; i++) {
          if (valid.indexOf(document.Tipcodeform.tipcode.value.substring(i,i+1)) == -1) {
            alert("Fill in a valid Tipcode.");
            document.Tipcodeform.tipcode.focus();
            return false;
          }      
        }
      }
    }

  return true;
}


function Change_videospeed (videospeed) {
    if (browser) {
      if (document.layers) {
        document.layers['akkoordencontrol'].document.forms['Tipcodeform'].videospeed.value = videospeed;
        document.layers['akkoordencontrol'].document.forms['Tipcodeform'].submit();
      }
      else {
        document.Tipcodeform.videospeed.value = videospeed;
        document.Tipcodeform.submit();
      }
    }
}