var rz_prev_page = 0;
var rz_next_page = 0;
var zr_act_page = 1;
function chgHpNewsItem(a)
{
    var pages = $('#maska').children(".naglowek_paragraf").length;
    if(pages < 2)
    {
        return;
    }
    if (akt_animate != 1) {
    akt_animate = 1;
    if (a == 0) {
    rz_prev_page = zr_act_page;
    rz_next_page = parseInt(zr_act_page) + 1;
    if(rz_next_page > pages)
    {
            rz_next_page = 1;
    }
    zr_act_page = rz_next_page;
    }
    else
    {
    rz_prev_page = zr_act_page;
    rz_next_page = parseInt(zr_act_page) - 1;
    if(rz_next_page < 1)
    {
            rz_next_page = pages;
    }
    zr_act_page = rz_next_page;
    }
    if (ie != 1)
    {
    $("#item_"+rz_next_page).css("opacity", "0");
    $("#item_"+rz_next_page).css("position", "absolute");
    $("#item_"+rz_next_page).css("left", "-790px");
    $("#item_"+rz_prev_page).css("position", "absolute");
    $("#item_"+rz_prev_page).css("left", "0px");
    $("#item_"+rz_prev_page).animate({left:"-790px", opacity: "0"}, 1200);
    $("#item_"+rz_next_page).css("position", "absolute");
    $("#item_"+rz_next_page).animate({left:"0px", opacity: "1"}, 2700, function(){
        akt_animate = 0;
    });
    }
    else
    {
    $("#item_"+rz_next_page).css("position", "absolute");
    $("#item_"+rz_next_page).css("left", "-790px");
    $("#item_"+rz_prev_page).css("position", "absolute");
    $("#item_"+rz_prev_page).css("left", "0px");
    $("#item_"+rz_prev_page).animate({left:"-790px"}, 1200);
    $("#item_"+rz_next_page).css("position", "absolute");
    $("#item_"+rz_next_page).animate({left:"0px"}, 2700, function(){
        akt_animate = 0;
    });
    }
    }

}

function chgMenuHover(nr)
{
    if(nr==1)
    {
        $("#menu-top_cont").css("background-position", "10px 0px");
    }

    if(nr==2)
    {
        $("#menu-top_cont").css("background-position", "86px 0px");
    }

    if(nr==3)
    {
        $("#menu-top_cont").css("background-position", "150px 0px");
    }

    if(nr==4)
    {
        $("#menu-top_cont").css("background-position", "210px 0px");
    }
}