// JavaScript Document
function setColorFocus(objName)
{
	if(objName.focus)
	{
		objName.style.color = "black";
		objName.style.backgroundColor = "#e7eff6";
	}
}

function setClearColorFocus(objName)
{
	if(objName.focus)
	{
		objName.style.color = "black";
		objName.style.backgroundColor = "white";
	}
}

function chkform_bktamu(addForm)
{
	with(addForm)
	{
		//var cek_nama = nama_tamu.value.search("[^A-Za-z]"); 
		if(nama_tamu.value == "" || nama_tamu.value == 0)
		{
		  alert ("Anda harus mengisi Nama Anda!");
		  nama_tamu.focus();
		  setColorFocus(nama_tamu);
		  return false;
		}else{
		  setClearColorFocus(nama_tamu);
		}
		
		var cek_email = email_tamu.value.match("^(.+)@(.+)$"); 
		if(email_tamu.value == "" || email_tamu.value == 0 || cek_email >= 0)
		{
		  alert ("Anda harus mengisi alamat email!");
		  email_tamu.focus();
		  setColorFocus(email_tamu);
		  return false;
		}else{
		  setClearColorFocus(email_tamu);
		}
		
		if(alamat_tamu.value == "" || alamat_tamu.value == 0)
		{
		  alert ("Anda harus mengisi Alamat Anda!");
		  alamat_tamu.focus();
		  setColorFocus(alamat_tamu);
		  return false;
		}else{
		  setClearColorFocus(alamat_tamu);
		}
		
		if(komentar.value == "" || komentar.value == 0)
		{
		  alert ("Anda harus mengisi Komentar Anda!");
		  komentar.focus();
		  setColorFocus(komentar);
		  return false;
		}else{
		  setClearColorFocus(komentar);
		}
		
	}
}