// JavaScript Document

userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function findElement(n,ly) {
  if (browserVers < 4)		return document[n];
  var curDoc = ly ? ly.document : document;
  var elem = curDoc[n];
  if (!elem) {
    for (var i=0;i<curDoc.layers.length;i++) {
      elem = findElement(n,curDoc.layers[i]);
      if (elem) return elem;
    }
  }
  return elem;
}

function changeImages() {
  if (document.images && (preloadFlag == true)) {
    var img;
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      img = null;
      if (document.layers) {
        img = findElement(changeImages.arguments[i],0);
      }
      else {
        img = document.images[changeImages.arguments[i]];
      }
      if (img) {
        img.src = changeImages.arguments[i+1];
      }
    }
  }
}

var preloadFlag = false;
function preloadImages() {
  if (document.images) {
    wings20menu_over = newImage("images/wings20menu_over.png");
    wings21specials_over = newImage("images/wings21specials_over.png");
    wings22delivery_over = newImage("images/wings22delivery_over.png");
    wings23hours_over = newImage("images/wings23hours_over.png");
    wings24contact_over = newImage("images/wings24contact_over.png");
    wings25about_over = newImage("images/wings25about_over.png");
    preloadFlag = true;
  }
}

/* CONTACT SUBMISSION FORM */

function checkForm() {
  firstname = document.getElementById("first").value;
  lastname = document.getElementById("last").value;
  email = document.getElementById("email").value;
  failure = 0;
  resetAllErrors();
  
  if (email == "") {
	document.getElementById("emailLabel").style.color = "red";
    document.getElementById("email").select();
    document.getElementById("email").focus();
    failure = 1;
  } 

  if (lastname == "") {
	document.getElementById("lastLabel").style.color = "red";
    document.getElementById("last").select();
    document.getElementById("last").focus();
    failure = 1;
  }   
  if (firstname == "") {
	document.getElementById("firstLabel").style.color = "red";
    document.getElementById("first").select();
    document.getElementById("first").focus();
    failure = 1;
  }  
  
  if (failure == 1) {
    document.getElementById("error").style.display = "inline";
	return false;
  } else {
	  document.getElementById("form-center").style.display="hidden";
	  document.getElementById("form-thanks").style.display="visible";
    return true;
  }
}
 
function resetAllErrors() {
  document.getElementById("firstLabel").style.color = "black";
  document.getElementById("lastLabel").style.color = "black";
  document.getElementById("emailLabel").style.color = "black";
}
  
/* CONTACT SUBMISSION FORM END */