var tab_count = 4;

function hide_all() {
	for (var i=1;i<=tab_count;i++) {
	document.getElementById('tab_content_'+i).style.display = "none";
	document.getElementById("tab_"+i).setAttribute("className", "");
	document.getElementById("tab_"+i).setAttribute("class", "");
	}
}

function show_hide(obj) {
    theObj = document.getElementById("tab_content_" + obj);
    if (theObj.style.display == "none") {
        hide_all();
        theObj.style.display = "block";
        document.getElementById("tab_" + obj).setAttribute("className", "activeTab");
        document.getElementById("tab_" + obj).setAttribute("class", "activeTab");
    }
}

function show_hide_ex(obj) {
	theObj = document.getElementById("tab_content_"+obj);
	if (theObj.style.display == "none") {
		hide_all();
		theObj.style.display = "block";
		document.getElementById("tab_"+obj).setAttribute("className", "activeTab");
		document.getElementById("tab_"+obj).setAttribute("class", "activeTab");
    }
    if (obj == "5" || obj == "6" || obj == "7") {
        tab_content_4.style.display = "block";
        nadpis = 4;
    }
    else if (obj == "8" || obj == "9") {
        tab_content_1.style.display = "block";
        nadpis = 1;
    }
    else if (obj == "10" || obj == "11" || obj == "12" || obj == "13" || obj == "14") {
        tab_content_2.style.display = "block";
        nadpis = 2;
    }
    else if (obj == "15" || obj == "16" || obj == "17" || obj == "18" || obj == "19") {
        tab_content_3.style.display = "block";
        nadpis = 3;
    }
    else if (obj == "2") { nadpis = 2; }
    else if (obj == "3") { nadpis = 3; }
    else if (obj == "4") { nadpis = 4; }
    else { nadpis = 1; }

    // šipka
    if (nadpis == 1) {
        document.getElementById("tab_1").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka.png)";
        document.getElementById("tab_2").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_3").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_4").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
    }
    else if (nadpis == 2) {
        document.getElementById("tab_1").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_2").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka.png)";
        document.getElementById("tab_3").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_4").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
    }
    else if (nadpis == 3) {
        document.getElementById("tab_1").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_2").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_3").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka.png)";
        document.getElementById("tab_4").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
    }
    else if (nadpis == 4) {
        document.getElementById("tab_1").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_2").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_3").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka_ltr.png)";
        document.getElementById("tab_4").style.backgroundImage = "url(/cze/legalnisoftware/templates/css/sipka.png)";
    }
}