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

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

function 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=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

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

function jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function emailvalid(email) {
    checkemail = /[\da-zA-Z]{2,}[\.\-]?[\da-zA-Z]{0,}\@[\da-zA-Z]{2,}[\.\-]?[\da-zA-Z]{0,}\.[a-zA-Z]{2,3}/;
    return(checkemail.exec(email));
}

function cekKontakID(){
	if(document.contact.nama.value == "")
	{
		alert("Kolom Nama Harus Diisi");
		document.contact.nama.focus();
		return false;
	}
	else if (document.contact.email.value == ""){				                                  
		alert ("Kolom Email Harus diisi");
		document.contact.email.focus();                       
		return false;                                     
	}                                                         
	else if (!emailvalid(document.contact.email.value)){
		alert("Alamat Email Salah");
  	    document.contact.email.focus();
  	    return false;
	}
	else if(document.contact.pesan.value == "")
	{
		alert("Kolom Pesan Harus Diisi");
		document.contact.pesan.focus();
		return false;
	}
	else {
		return true;
	}
}

function cekKontakEN(){
	if(document.contact.nama.value == "")
	{
		alert("Name Must Be Filled");
		document.contact.nama.focus();
		return false;
	}
	else if (document.contact.email.value == ""){				                                  
		alert ("Email Must Be Filled");
		document.contact.email.focus();                       
		return false;                                     
	}                                                         
	else if (!emailvalid(document.contact.email.value)){
		alert("Invalid Email address");
  	    document.contact.email.focus();
  	    return false;
	}
	else if(document.contact.pesan.value == "")
	{
		alert("Comment Must Be Filled");
		document.contact.pesan.focus();
		return false;
	}
	else {
		return true;
	}
}

extArray2 = new Array(".jpeg", ".jpg", ".gif", ".png");

function LimitAttach2(form, file) {
	allowSubmit = false;
	if (!file) return;
		while (file.indexOf("\\") != -1)
		file = file.slice(file.indexOf("\\") + 1);
	ext = file.slice(file.indexOf(".")).toLowerCase();
	for (var i = 0; i < extArray2.length; i++) {
	if (extArray2[i] == ext) { allowSubmit = true; break; }
	}
	if (allowSubmit) form.submit();
	else
	alert("Berkas yang diijinkan untuk diupload \nharus bertipe :  " 
	+ (extArray2.join("  ")) );
}