function cookieVal(cookieName, cookieString){
	var startLoc = cookieString.indexOf(cookieName);
	if ( startLoc == -1) { /*startLoc==undefined || */
		return("");
	}
	var sepLoc = cookieString.indexOf("=", startLoc);
	var tmpString = cookieString+";";
	var endLoc = tmpString.indexOf(";", startLoc);
	if(endLoc == -1) {
		endLoc = cookieString.length;
	}
	return( cookieString.substring(sepLoc+1, endLoc) );
}

function buildArray(s){
	var obj=new Object();
	while(s!="" && s!="CartData"){
		var art=s.substring(0,s.indexOf("-"));
		var num=s.substring( s.indexOf("-")+1, s.indexOf("+") );
		obj[art]=parseInt(num);
		s=s.substring( s.indexOf("+")+1, s.length );
	}
	return obj;
}

function buildCartData(obj){
	var s="";
	for(art in obj){
		s=s+art+"-"+obj[art]+"+";
	}
	return s;
}

function insertArt(artName, artNum){
	var s=cookieVal("CartData",document.cookie);
	if( s=="CartData"){
		s=""; }
	var data=buildArray( s );
	var indx=s.indexOf(artName+"-");
	if( indx==-1 ){
		data[artName]=artNum;
	}else{
		data[artName] = data[artName] + artNum;
	}
	s=buildCartData(data);
	document.cookie="CartData="+s+"; path=/; expires="+expDate()+";";
}

function insertArtNice(artName, tName){
	insertArt(artName, 1);
	if(document.getElementById('korzinka')){
		document.getElementById('korzinka').src=WEB_DB_NAME
				+"korzinavmist?OpenForm&unique="+Math.random();
	};
	alert("\u0421\u043F\u0430\u0441\u0438\u0431\u043E, \u0442\u043E\u0432\u0430\u0440 \u0434\u043E\u0431\u0430\u0432\u043B\u0435\u043D \u0432 \u043A\u043E\u0440\u0437\u0438\u043D\u0443: "+tName+".");
}

function setArt(artName,artNum){
	var s=cookieVal("CartData",document.cookie);
	var data=buildArray( s );
	var indx=s.indexOf(artName+"-");
	if( indx==-1 ){
		data[artName]=artNum;
	}else{
		data[artName] = artNum;
	}
	s=buildCartData(data);
	document.cookie="CartData="+s+"; path=/; expires="+expDate()+";";
	clearTrash();
}

function clearTrash() {
	var s=cookieVal("CartData",document.cookie);
	var obj=buildArray( s );
	
	var newobj = new Object();
	for(art in obj){
		if( obj[art]>0){
			newobj[art]=obj[art];
		}
	}
	s=buildCartData(newobj);
	document.cookie="CartData="+s+"; path=/; expires="+expDate()+";";
}

function cartIsEmpty() {
	clearTrash();
	var s=cookieVal("CartData",document.cookie);
	var obj=buildArray( s );
	for(art in obj){
		if( obj[art]>0){
			return 1;
		}
	}
	return 0;
}