$(function(){
	var maxAd = $("#main_advertising").attr("class");
	maxAd = maxAd.split("madd_");
	maxAd = maxAd[1];
	var curAd = 0;
	
		
	$(".promo_arrows").click(function(){
		return false;	
	});
	
	$(".next-arrow").click(function(){
		nCur = (curAd * 1) + 1;
		if(nCur < maxAd){
			curAd++;	
			nMwas = (curAd * 850) * -1;		
			$(".advertising").animate({
			  left: nMwas
			}, 1000);			
		}else{
			curAd = 0;	
			nMwas = (curAd * 850) * -1;		
			$(".advertising").animate({
			  left: nMwas
			}, 1500);						
		}
	});
	$(".back-arrow").click(function(){
		nCur = (curAd * 1) -1;	
		if(curAd > 0){
			curAd = (curAd * 1) -1;	
			nMwas = (curAd * 850) * -1;					
			$(".advertising").animate({
			  left: nMwas
			}, 1000);			
		}else{
			curAd = (maxAd * 1)-1;	
			nMwas = (curAd * 850) * -1;		
			$(".advertising").animate({
			  left: nMwas
			}, 1500);									
		}
	});
	
});