var flag = true;
		function zan(keys){

			if (keys == 1){


				if($('.div1_block').is(":hidden")){
					$('.img_block_top').fadeOut("slow",function(){$('.div1_block').fadeIn("slow")})
				}else{
					$('.div1_block').fadeOut("slow",function(){$('.img_block_top').fadeIn("slow")})
				}

				return;
			}
			if (keys == 2 && flag){
				flag = false;
				if($('.div2_block').is(":hidden")){
					if(!$('.div3_block').is(":hidden")){

						$('#img_block_2,.div3_block').fadeOut("slow",function(){$('.div2_block,#img_block_3').fadeIn("slow",function(){flag = true;})})
					} else {
						$('.logo_block,#img_block_2').fadeOut("slow",function(){$('.div2_block').fadeIn("slow",function(){flag = true;})})
					}
				}else{
					$('.div2_block').fadeOut("slow",function(){$('.logo_block,#img_block_2').fadeIn("slow",function(){flag = true;})})
				}
				return;
			}
			if (keys == 3 && flag){
				flag = false;
				if($('.div3_block').is(":hidden")){
					if(!$('.div2_block').is(":hidden")){

						$('#img_block_3,.div2_block').fadeOut("slow",function(){$('.div3_block,#img_block_2').fadeIn("slow",function(){flag = true;})})
					} else {
						$('.logo_block,#img_block_3').fadeOut("slow",function(){$('.div3_block').fadeIn("slow",function(){flag = true;})})
					}
				}else{
					$('.div3_block').fadeOut("slow",function(){$('.logo_block,#img_block_3').fadeIn("slow",function(){flag = true;})})
				}
				return;
			}
			if (keys == 4 && flag){
				flag = false;
				if($('.div4_block').is(":hidden")){
					if(!$('.div5_block').is(":hidden")){

						$('#img_block_4,.div5_block').fadeOut("slow",function(){$('.div4_block,#img_block_5').fadeIn("slow",function(){flag = true;})})
					} else {
						$('#img_block_bot,#img_block_4').fadeOut("slow",function(){$('.div4_block').fadeIn("slow",function(){flag = true;})})
					}
				}else{
					$('.div4_block').fadeOut("slow",function(){$('#img_block_bot,#img_block_4').fadeIn("slow",function(){flag = true;})})
				}

			}
			if (keys == 5 && flag){
				flag = false;
				if($('.div5_block').is(":hidden")){
					if(!$('.div4_block').is(":hidden")){

						$('#img_block_5,.div4_block').fadeOut("slow",function(){$('.div5_block,#img_block_4').fadeIn("slow",function(){flag = true;})})
					} else {
						$('#img_block_bot,#img_block_5').fadeOut("slow",function(){$('.div5_block').fadeIn("slow",function(){flag = true;})})
					}
				}else{
					$('.div5_block').fadeOut("slow",function(){$('#img_block_bot,#img_block_5').fadeIn("slow",function(){flag = true;})})
				}

			}

		}
		function rep(img,src){
			img.src= '../uploads_en/images/'+src;
		}
		function repimg(img,src){
			img.src= '../images/'+src;
		}