function GetCookieValueByName(name){
	var beg = document.cookie.indexOf(name+"=");
	if(beg==-1)
		return '';

	var end = document.cookie.indexOf(";", beg + name.length);
	if(end==-1)
		end = document.cookie.length;
  //alert("qw"+document.cookie.substring(beg + name.length + 1, end));
	return unescape(document.cookie.substring(beg + name.length + 1, end));
}

function SetCookieForNDays(name, value, days, path, domain, secure){
	//alert(value);
	var today = new Date();
	expires = new Date(today.getTime() + days*24*60*60*1000);
	document.cookie = name + "=" + escape(value) +
                "; expires=" + expires.toGMTString() +
                ((path) ? "; path=" + path : "") +
                ((domain) ? "; domain=" + domain : "") +
                ((secure) ? "; secure" : "");
  
}

function addItem2Srav(id){
	var quantity=1; 
	var it_srav = GetCookieValueByName('it_srav');
	if(it_srav.search(new RegExp('(?:^|;)'+id+';'))!=-1){
 		return;
	} 
	
	if ( !confirm('Добавить новый товар в таблицу сравнения?') ) return;
	
	SetCookieForNDays('it_srav',GetCookieValueByName('it_srav') + id + ';',1, '/');
	showSrav();
}

function delItemFromSrav(id){
	var it_srav = GetCookieValueByName('it_srav');
	it_srav = it_srav.replace(new RegExp('(^|;)'+id+';'),'$1');
	SetCookieForNDays('it_srav',it_srav,1, '/');
	showSrav();
}


function showSrav(){
	var it_srav = GetCookieValueByName('it_srav');
	//alert(it_srav);
	var div_srav = document.getElementById('div_srav');
	if(!div_srav){
  	//alert('Where is my cart?');
  	return;
 	}
	var item_sum=new Number(0);
	var items;
	var real_items_q=new Number(0);

	if(it_srav){
 		items = it_srav.split(';');
 		real_items_q = items.length ? items.length-1 : 0;
	}

	div_srav.innerHTML ='';

 	for(var i=0;i<real_items_q;i++){
  	var item = items[i].split(',');
   	item_sum += 1;	
   	//div_srav.innerHTML += item[0] +' '+ item[1] +' '+ item[2] 
   	//+ '<a href=# onclick="updateItemQuantity('+item[0]+','+item[1]+','+item[2]+')">U</a> ' 
   	//+ '<a href=# onclick="delItemFromCart('+item[0]+')">D</a>' + '<br>';
  }
  
	div_srav.innerHTML += 'Для сравнения выбрано товаров ' + item_sum + ' шт.';

	if(item_sum!=0){
		//div_srav.innerHTML += ' на сумму ' + price_sum.toFixed(2); 
		if(window.location.href.indexOf("/catalogue/srav/")==-1)
		div_srav.innerHTML += '<br><a href=/catalogue/srav/><b>Перейти на таблицу сравнения</b></a>';
	}
}