var cookie_name = "cookie1_pr=";

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}


function _update_cart(id, value) {

    var c1, cvalue, i2;
    var name = "p"+id+"%3D";
    var c = document.cookie;
    var i = c.indexOf(cookie_name);
    if (i == -1) {
        c1 = "";
    } else {
        i += cookie_name.length;         
        i2 = c.indexOf(";", i); 
        if (i2 == -1) c1 = c.substring(i, c.length);
        else c1 = c.substring(i, i2);
    } 

    if (c1.length) {
        i = c1.indexOf(name);
        if (i == -1) cvalue = c1+"%26"+name+value;
        else {
            i2 = c1.indexOf("%26", i);        
            cvalue = c1.substring(0, i+name.length) + value;
            if (i2 != -1) cvalue += c1.substring(i2, c1.length);
        }        
    } else {
       cvalue = name+value;        
    }

    document.cookie = cookie_name + cvalue;
    document.location.href = "?l=lat&s=cart";
    //location.reload();
}

function _clear_cart(noref) {

    document.cookie = cookie_name;

    if(!noref) location.reload(); 
}