function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function isDefined(property) {
  return (typeof property != 'undefined');
}
var flashVersion = 0;
function getFlashVersion() {
   var latestFlashVersion = 8;
   var agent = navigator.userAgent.toLowerCase(); 
   
   if (agent.indexOf("mozilla/3") != -1 && agent.indexOf("msie") == -1) {
      flashVersion = 0;
   }
  
   if (navigator.plugins != null && navigator.plugins.length > 0) {
      var flashPlugin = navigator.plugins['Shockwave Flash'];
      if (typeof flashPlugin == 'object') { 
         for (var i = latestFlashVersion; i >= 3; i--) {
            if (flashPlugin.description.indexOf(i + '.') != -1) {
               flashVersion = i;
               break;
            }
         }
      }
   }

   else if (agent.indexOf("msie") != -1 && parseInt(navigator.appVersion) >= 4 && agent.indexOf("win")!=-1 && agent.indexOf("16bit")==-1) {
      var doc = '<scr' + 'ipt language="VBScript"\> \n';
      doc += 'On Error Resume Next \n';
      doc += 'Dim obFlash \n';
      doc += 'For i = ' + latestFlashVersion + ' To 3 Step -1 \n';
      doc += '   Set obFlash = CreateObject("ShockwaveFlash.ShockwaveFlash." & i) \n';
      doc += '   If IsObject(obFlash) Then \n';
      doc += '      flashVersion = i \n';
      doc += '      Exit For \n';
      doc += '   End If \n';
      doc += 'Next \n';
      doc += '</scr' + 'ipt\> \n';
      document.write(doc);
   }
      
   else {
      flashVersion = flashVersion_DONTKNOW;
   }

   return flashVersion;
}

flashVersion_DONTKNOW = -1;


function jsECheck(str) {
	var aResult = true;
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (str != "") {
		if (filter.test(str)) {
			aResult = true;
		}
		else {
			aResult = false;
		}
	}
	else {
		aResult = false;
	}
	return (aResult)
}	

function jsCheckFeedbackForm() {
	if (document.AFeedbackForm.AEmail.value == "") {
	    alert("Please enter your e-mail address");
		return false;
	}
	else {
		return true;
	}
}

function jsVerifyAgreement() {
	var aRadio = document.AUserAgreement.AAcceptAgreement;
	if (aRadio[0].checked) {
		return true;
	}
	else if (aRadio[1].checked) {
		document.location = "/index.jsp";
		return false;
	}
	else {
		alert("Please select the User Agreement option before downloading Nabit");
		return false;
	}
}

function jsVerifyContestForm() {
  if (document.AContestForm.AFName.value == "") {
    alert("Please enter your first name");
	return false;
  }
  else if (document.AContestForm.ALName.value == "") {
    alert("Please enter your last name");
	return false;
  }
  else if (!jsECheck(document.AContestForm.AEmail.value)) {
    alert("Please enter a valid e-mail address");
	return false;
  }
  else if (document.AContestForm.AConfirmEmail.value == "") {
  	alert("Please confirm your e-mail address");
	return false;
  }
  else if (document.AContestForm.AEmail.value != document.AContestForm.AConfirmEmail.value) {
  	alert("Your e-mail addresses do not match");
	return false;
  }
  else {
  	return true;
  }
}

function jsValidateLogin() {
	if (document.ALogin.AUsername.value == "") {
		alert("Please enter your username");
		return false;
	}
	else if (document.ALogin.APassword.value == "") {
		alert("Please enter your password");
		return false;
	}
	else {
		return true;
	}
}

function jsCheckFeatureForm() {
	if (document.AFeature.AFeatureText.value == "") {
		alert("Please enter the feature text");
		return false;
	}
	else {
		return true;
	}
}

function jsCheckFAQForm() {
	if (document.AFAQ.AQuestion.value == "") {
		alert("Please enter the question");
		return false;
	}
	else if (document.AFAQ.AAnswer.value == "") {
		alert("Please enter the answer");
		return false;
	}
	else {
		return true;
	}
}

function jsCheckHTopicForm() {
	if (document.AHTopic.ATopic.value == "") {
		alert("Please enter the topic");
		return false;
	}
	else if (document.AHTopic.AContent.value == "") {
		alert("Please enter the content");
		return false;
	}
	else {
		return true;
	}
}

function jsCheckGForm() {
	if (document.AG.ATitle.value == "") {
		alert("Please enter the title");
		return false;
	}
	else if (document.AG.ADetail.value == "") {
		alert("Please enter the detail");
		return false;
	}
	else {
		return true;
	}
}

function jsCheckShareForm() {
        if (document.ShareForm.AEmail.value == "") {
            alert("Please enter your e-mail address");
                return false;
        }

	if (document.ShareForm.AName.value == "") {
	    alert("Please enter your name");
		return false;
	}

	return true;
}