// JavaScript Document

var imgCount = 0;
var currImg = 1;
$(document).ready(function() {
   $("#gallery_display").scrollTo(0, 0);
   imgCount = $("#gallery_display div img").length;
   checkArrows();
   
   $("#right_arrow").click( 
	   function() {
		   if(currImg == imgCount) return;
		   $("#gallery_display").scrollTo("+=800", "0");
		   currImg++;
		   checkArrows();
	   }
   );
   $("#left_arrow").click(
	   function() {
		   if(currImg == 1) return;
		   $("#gallery_display").scrollTo("-=800", "0");
		   currImg--;
		   checkArrows();
		   
	   }
   );
   
   $(".arrow").hover( 
	   function() {
		   if(this.src.match("inactive"))
		   	this.src = this.src.replace("inactive", "active");
		   else
		   	this.src = this.src.replace("active", "inactive");
	   }
   );
   
   $('a.lightbox').lightBox(); // Select all links that contains lightbox in the attribute rel

   
});

function checkArrows(){
   if(currImg == imgCount || imgCount == 0){
      $("#right_arrow").css('visibility','hidden');
   }
   else {
      $("#right_arrow").css('visibility','visible');
   }
   if(currImg == 1 || imgCount == 0){
      $("#left_arrow").css('visibility','hidden');
   }
   else {
      $("#left_arrow").css('visibility','visible');
   }
}