jQuery(document).ready(function(){	//executed after the page has loaded
 checkURL();	//check if the URL has a reference to a page and load it
 $('ul li a').click(function (e){	//traverse through all our navigation links..
 checkURL(this.hash);	//.. and assign them a new onclick event, using their own hash as a parameter (#page1 for example)
 });
 setInterval("checkURL()",250);	//check for a change in the URL every 250 ms to detect if the history buttons have been used
});
var lasturl="";	//here we store the current URL hash
function checkURL(hash)
  {
  if(!hash) hash=window.location.hash;	//if no parameter is provided, use the hash value from the current address
 if(hash != lasturl)	// if the hash value has changed
  {
  lasturl=hash;	//update the current hash
  loadPage(hash);	// and load the new page
  }
  }
function loadPage(url)	//the function that loads pages via AJAX
  {
  url=url.replace('#page','');	//strip the #page part of the hash and leave only the page number
 $('#loading').css('visibility','visible');	//show the rotating gif animation
 $.ajax({	//create an ajax request to load_page.php
  type: "POST",
  url: "load_page.php",
  data: 'page='+url,	//with the page number as a parameter
  dataType: "html",	//expect html to be returned
  success: function(msg){
	 
 if(parseInt(msg)!=0)	//if no errors
  {
  $('#main_content').html(msg);	//load the returned html into pageContet
  $('#loading').css('visibility','hidden');	//and hide the rotating gif
  };
  lightgallery.init();
  }
  
 
 });
}