$('#gallery').ready(function(){
 
	
	$(".navbuts").fadeTo(1,0.4);
	$.can_scroll = false;


	
	

	
	$('.pre_photo').click(function(){
		
		if($(this).next().next().attr('class')!='pre_photo'){
			$('#nextbut').fadeTo(1,0.01);
			$('#prevbut').fadeTo(1,0.4);
		}
		else{
			$('#nextbut').fadeTo(1,0.4);}
		
		
		if($(this).prev().prev().attr('class')!='pre_photo'){
			$('#prevbut').fadeTo(1,0.01);
			$('#nextbut').fadeTo(1,0.4);
		}
		else{
			$('#prevbut').fadeTo(1,0.4);}
		
		$('#picscrn').fadeIn(20);
		$('body').css('overflow','hidden');
		$.load_pic($(this).attr('href'));
		$.curpic = $(this);
	});
	
	
	
	$('#bgscreen').click(function(){
		
		$('#picscrn').fadeOut("fast");
		$('body').css('overflow','auto');
		
	});
	
	
	$('#pic').click(function(){
		
		$('#picscrn').fadeOut("fast");
		$('body').css('overflow','auto');
		
	});
	
	
	
	
	$.load_pic = function(pic_id){
	$('#pic').html('');
	$('#pic').hide();
	$('#loadscrn').fadeIn(200);
	$.preload( [pic_id], {
				base:'',
				ext:'',
				onComplete:function( data ){
					var img = new Image();
					img.src = data.image;
					$('#pic').html('<img src='+data.image+'>');
					//alert($('#pic').html());
				},
				onFinish:function(){
					$('#loadscrn').hide();
					$('#pic').fadeIn(200);
				}
			});
	}
	
	
	
	$("#prevbut").hover(
      function () {
		//alert($.curpic.prev().prev().attr('class'));
		if($.curpic.prev().prev().attr('class')=='pre_photo'){
			$(this).fadeTo("fast",0.8);
			$('#prevpic').fadeTo(500,1);
			$('#prevpic').html($.curpic.prev().prev().clone());
			//alert($(this).next().next().attr('class'));
		}
		else{
			$(this).fadeTo(500,0.01);
			//$('#prevpic').html('');
		}
		
      },		
	  
      function () {
		if($.curpic.prev().prev().attr('class')=='pre_photo'){
			$(this).fadeTo("fast",0.4);}
		$('#prevpic').fadeTo("fast",0.01);
		//$('#prevpic').html('');
      }
    );
	
	
	$("#nextbut").hover(
      function () {
		//alert($.curpic.prev().prev().attr('class'));
		if($.curpic.next().next().attr('class')=='pre_photo'){
			$(this).fadeTo("fast",0.8);
			$('#nextpic').fadeTo(500,1);
			$('#nextpic').html($.curpic.next().next().clone());
			//alert($(this).next().next().attr('class'));
		}
		else{
			$(this).fadeTo(500,0.01);
			//$('#nextpic').html('');
		}
		
      },		
	  
      function () {
		if($.curpic.next().next().attr('class')=='pre_photo'){
			$(this).fadeTo("fast",0.4);}
		$('#nextpic').fadeTo("fast",0.01);
		//$('#prevpic').html('');
      }
    );
	
	
	
	
	$(".navbuts").click(
      function () {
        $(this).fadeTo(50,1);
		//alert($.curpic.attr('id'));
      }); 
	
    
	$("#nextbut").click(
    function () {
		if($.curpic.next().next().attr('class')!='pre_photo'){
			$('#nextbut').fadeTo(1,0.01);
			$('#prevbut').fadeTo(1,0.4);
			$('#nextpic').fadeTo(500,0.01);
		}
		else{
			$('#prevbut').fadeTo(1,0.4);
			$.load_pic($.curpic.next().next().attr('href'));
			$.curpic = $.curpic.next().next();
			if($.curpic.next().next().attr('class')!='pre_photo'){
				$('#nextpic').fadeTo(500,0.01);
				$('#nextbut').fadeTo(500,0.01);}
			else{
				//$('#nextpic').fadeTo(200,0.01);
				$('#nextpic').html($.curpic.next().next().clone());
				//$('#nextpic').fadeTo(200,1);
				}
		}
			
		
    }); 
	
	
	$("#prevbut").click(
    function () {
		if($.curpic.prev().prev().attr('class')!='pre_photo'){
			$('#prevbut').fadeTo(1,0.01);
			$('#nextbut').fadeTo(1,0.4);
			$('#prevpic').fadeTo(500,0.01);
		}
		else{
			$('#nextbut').fadeTo(1,0.4);
			$.load_pic($.curpic.prev().prev().attr('href'));
			$.curpic = $.curpic.prev().prev();
			if($.curpic.prev().prev().attr('class')!='pre_photo'){
				$('#prevpic').fadeTo(500,0.01);
				$('#prevbut').fadeTo(500,0.01);}
			else{
				//$('#prevpic').fadeTo(200,0.01);
				$('#prevpic').html($.curpic.prev().prev().clone());
				//$('#prevpic').fadeTo(200,1);
				}
		}
			
		
    }); 
	
	
	$.setscrlbar = function(){
		
		$.calc_k();
		//$('#scrlslider').width(Math.round($.k*($('#scrlbar').width()-600)));
		var slider_left = -$(document.getElementById(cur_gallery));
		
		$.set_slider_pos();
		
		//alert(scrlslwidth);
		
	}
	
	$.calc_k = function(){
		var active_gal =  $(document.getElementById(cur_gallery));
		$.k = (($('#scrlbar').width()-720)/active_gal.width());		
	}
	
	$.set_slider_pos = function(){
		var gal_offset = $(document.getElementById(cur_gallery)).offset();
		var slider_left = Math.round(-gal_offset.left * ($('#scrlbar').width()-720-$('#scrlslider').width()  ) / ($(document.getElementById(cur_gallery)).width()-$('#scrlbar').width())  );
		$('#scrlslider').css('left', slider_left);
		
	}
	
	
	
	
	
	$("#scrlslider").bind('mousedown',function(e){
		if(FF)e.preventDefault();//отмена драг и дроп для фф и сафари
	   $.can_scroll = true;
	   $.scroll_mouse_pos = (e.pageX - this.offsetLeft);
	 });
	 
	 
	 
	 $('body').bind('mouseup', function(){
	   $.can_scroll = false;
	   $.setNavButns();
	 });
		
	 $('body').bind('mousemove', function(e){
	   if($.can_scroll){
	        var slider_left = (e.pageX - $.scroll_mouse_pos - 360);
			if(slider_left<=0) slider_left = 0;
			if(slider_left>=($('#scrlbar').width()-720-$('#scrlslider').width())) slider_left = $('#scrlbar').width()-720-$('#scrlslider').width();
			$('#scrlslider').css('left', slider_left);
			$(document.getElementById(cur_gallery)).css('left', (-slider_left*($(document.getElementById(cur_gallery)).width()-$('#scrlbar').width())/($('#scrlbar').width()-720-$('#scrlslider').width()  )));
			
			
	   }		
	 });
	 
		
	 
	 
	 $('#gallery').bind('mousewheel', function(event, delta){
		event.preventDefault();
		event.returnValue=!1;
		var new_left = parseInt($(document.getElementById(cur_gallery)).css('left')) + 70*delta;
		if (navigator.appName == 'Opera') new_left = parseInt($(document.getElementById(cur_gallery)).css('left')) - 70*delta/120;
		//alert(parseInt($(document.getElementById(cur_gallery)).css('left'))+'  '+delta);
		if (new_left>0) {
			new_left = 0;
			$('#scrl_but_left').fadeTo(1,0.1);
			$('#scrl_but_right').fadeTo(1,0.8);
		}
		else $('#scrl_but_left').fadeTo(1,0.8);
		if (new_left<(-$(document.getElementById(cur_gallery)).width()+$('#scrlbar').width())){
			new_left = -$(document.getElementById(cur_gallery)).width()+$('#scrlbar').width();
			$('#scrl_but_right').fadeTo(1,0.1);
			$('#scrl_but_left').fadeTo(1,0.8);
		}
		else $('#scrl_but_right').fadeTo(1,0.8);
		
		$(document.getElementById(cur_gallery)).css('left', new_left);
		$.set_slider_pos();	
			//alert(delta);
	});
		
		
	 $('.scrl_but').bind('mousedown',function(){
		step = big_step;		
	 });
	 
	 $('.scrl_but').bind('mouseup',function(){
		step = big_step/5;		
	 });
	 
	 
	 $('#gallery').bind('resize', function(){
		$.setscrlbar();
	 });
	 
	 $.setNavButns = function(){
	   var slider_left = parseInt($('#scrlslider').css('left'));
	   if(slider_left<=0){
				$('#scrl_but_left').fadeTo(1,0.1);
				$('#scrl_but_right').fadeTo(1,0.8);
				}
			else $('#scrl_but_left').fadeTo(1,0.8);
			if(slider_left>=($('#scrlbar').width()-720-$('#scrlslider').width())){ 
				$('#scrl_but_right').fadeTo(1,0.1);
				$('#scrl_but_left').fadeTo(1,0.8);
				}
			else $('#scrl_but_right').fadeTo(1,0.8);
	 }
	 
	 
	 $.setscrlbar();
	 $('#scrlbar').show("fast");
	

});