var AlreadySub = false;

function validateForm(){
        if( AlreadySub )
    return false;
  var err = 0;
  var errDesc = "Please complete the following:\n\n";

  
  // Check Name
  if (document.logoform.name.value == ""){
    err++;
    errDesc += err + ") Please enter your name\n";
  }
  //Check Email
  if (document.logoform.email.value == ""){
    err++;
    errDesc += err + ") Please enter your e-mail address\n";
  }else{
                atidx = document.logoform.email.value.indexOf("@");
    dotidx = document.logoform.email.value.indexOf(".",atidx); // dot after the @
    domchk = document.logoform.email.value.substr(atidx+1);
    //alert(domchk);
                if (atidx == -1 || dotidx == -1 || dotidx > (document.logoform.email.value.length-3) 
        || document.logoform.email.value.length < 6 || (ValidTLD(domchk,tldArray)==-1)){
      err++;
      errDesc += err + ") Please give a valid e-mail address\n";
    }
  }
  
    
  //Check Website
  if (document.logoform.url.value == ""){
    err++;
    errDesc += err + ") Please give your website address\n";
  }else{
    var lcUrl = document.logoform.url.value.toLowerCase();
                //if (document.logoform.url.value.indexOf(".") == -1 || document.logoform.url.value.length < 11){
                urldom = document.logoform.url.value;
    if(urldom.indexOf("http://")==0)
      urldom = urldom.substr(7);
    if(urldom.indexOf("https://")==0)
      urldom = urldom.substr(8);
    if(urldom.indexOf("/")>-1)
        urldom = urldom.substring(0,urldom.indexOf("/"));
    if(urldom.indexOf(":")>-1)
        urldom = urldom.substring(0,urldom.indexOf(":"));
    //alert(urldom);
    if (ValidTLD(urldom,tldArray)==-1){
      err++;
      errDesc += err + ") Please enter a valid website address\n";
    } else if(urldom.indexOf("@")>-1) {
            if(!confirm("Website addresses dont usually contain the @ symbol\nAre you sure?"))
      {
        return false;
      }
            //err++;
      //errDesc += err + ") Please enter a website address without an '@'\n";
    }
        }
  
  // Check Radio Button
  if (document.logoform.logo.value < 0
     ){
    err++;
    errDesc += err + ") You must select a button style from the choice given\n";
  }
  

  //alert("hello");     
  //Check to see if form should be submitted
  if (err > 0){
    alert(errDesc);
    return false;
  }else{
    if(!AlreadySub) {
      AlreadySub = true;
      document.logoform.action = "http://www.london-2012.co.uk/link/addref.php";
      document.logoform.name.value = document.logoform.name.value;
      document.logoform.email.value = document.logoform.email.value;
      document.logoform.url.value = document.logoform.url.value;
      document.logoform.submit();
    }
    return false;
  }
}

function ValidTLD(myString,tldArray){
 var found=false;
 var myIndex=0;
 for(i=0;i<tldArray.length;i++){
//   alert("comparing "+myString+" with "+tldArray[i]);
 
if((myString.lastIndexOf(tldArray[i])>1)&&(myString.lastIndexOf(tldArray[i])==(myString.length-tldArray[i].length))){
     myIndex=myString.lastIndexOf(tldArray[i]);
//     alert ("found TLD match with "+tldArray[i]);
     return myIndex;
   }
 }
 //if(String(document.location).indexOf("nemesis"))
 //  return 1;
 //else
   return -1;
}

var wdw = null;
// sn = www.london-2012.co.uk

function show_image( img , obj) {
  wdw = window.open("about:blank", "preview","height=10");
  wdw = window.open("http://www.bid-london2012.co.uk/link/preview.php?img="+img, "preview");
  wdw.focus();
}