var currentImage = 'khong co gi';

function show(filenamez) {
	currentImage = filenamez;
	fullfilenamez = 'photos/' + filenamez;
	
	// xuat hien fullscreen
  $("#fullscreen").css("display", "block"); 
  var screenHeight = document.documentElement.scrollHeight;
  $("#fullscreen").css("height", screenHeight); 
  
  scrollTop = (document.documentElement.scrollTop + 50) + 'px';

  
  // xuat hien image
  var imageleft = ((document.documentElement.scrollWidth - 700) / 2) + 'px';
  $("#mainimg").fadeIn("slow");
  $("#mainimg").css({"left" : imageleft,
                     "top" : scrollTop
  	                }); 
  $("#mainimg").attr("src",fullfilenamez); 
  
  
  imageleft = ((document.documentElement.scrollWidth - 450) / 2) + 'px';
  scrollTop = (document.documentElement.scrollTop + 20) + 'px';
  // xuat hien menubar
  $("#menubar").fadeIn("slow"); 
  $("#menubar").css({"left" : imageleft,
                     "top" : scrollTop
  	                });   
}


function closeall() {
  
  //close menubar
  $("#menubar").css({"display" : "none"}); 
  

	//close fullscreen
  $("#fullscreen").css({"display" : "none"}); 

  //close image
  $("#mainimg").fadeOut("slow"); 
}


function otherimage(methodz){
	$.ajax({
	type: "POST",
	url: "next.php?case=" + methodz,
	data: {'currentimage':currentImage},
	success: function(msg)
	          {
              currentImage = msg;
              fullfilenamez = 'photos/' + currentImage;
              $("#mainimg").fadeOut("slow",function(){
																			              $("#mainimg").attr("src",fullfilenamez); 
																			              $("#mainimg").fadeIn("slow");              	                    
              	                    });

			      }
	});
}



function loadNewsLetter(newsletter_id){
  $('#currentissue_newsletter_title').html('loading...');	
  $('#currentissue_newsletter').html('loading...');		

// get content
	$.ajax({
		type: "POST",
		url: "user.action.php?do=loadNewsLetter",
		data: {"newsletter_id" : newsletter_id
		      },
		success: function(msg){
  $('#currentissue_newsletter').html(msg);	
  
  		
  // get title
	$.ajax({
		type: "POST",
		url: "user.action.php?do=loadNewsLetter&type=title",
		data: {"newsletter_id" : newsletter_id
		      },
		success: function(msg){
  $('#currentissue_newsletter_title').html(msg);	
  closeall();
				      }
		});				      
				      
				      }
		});
}


function showLoading() {
	// xuat hien fullscreen
  $("#fullscreen").css("display", "block"); 
  var screenHeight = document.documentElement.scrollHeight;
  $("#fullscreen").css("height", screenHeight); 
}

 function randurl(urlname){
 							var fetch_unix_timestamp = function()
							{
							return parseInt(new Date().getTime().toString().substring(0, 10))
							};
							
							var randomnumber=fetch_unix_timestamp();
							var aurl= urlname + '?p=';
							var ranurl= aurl + randomnumber;
							return ranurl;
}
 
function submit_message(){
 	var input_name = document.getElementById('input_name').value;
 	var input_email = document.getElementById('input_email').value;
 	var input_content = document.getElementById('input_content').value; 	

	$.ajax({
		type: "POST",
		url: "user.action.php?do=submit_message",
		data: {"input_name":input_name,
		       "input_email":input_email,
		       "input_content":input_content
		      },
		success: function(msg){
                    alert('Your message has been sent. We will reply as soon as possible. Thank you.');
                    document.getElementById('input_name').value = '';
                    document.getElementById('input_email').value = '';
                    document.getElementById('input_content').value = '';
				      }
		});

}