//--------------------------首页切换

var nn;
nn = 1;
//setTimeout('change_img()', 10000);
//function change_img() {
//    if (nn > 4) nn = 1
//    setTimeout('setFocus1(' + nn + ')', 13000);
//    nn++;
//    tt = setTimeout('change_img()', 13000);
//}
//function setFocus1(i) {
//    selectLayer1(i);
//}
function selectLayer1(i) {

    switch (i) {
        case 1:

            document.getElementById("u1").style.color = "red";
            document.getElementById("u2").style.color = "#0051A2";
            //document.getElementById("u3").style.color = "#0051A2";
            document.getElementById("u4").style.color = "#0051A2";
            document.getElementById("focusPic1").style.display = "block";
            document.getElementById("focusPic2").style.display = "none";
            document.getElementById("focusPic3").style.display = "none";
            document.getElementById("focusPic4").style.display = "none";
            document.getElementById("focusPic1nav").style.display = "block";
            document.getElementById("focusPic2nav").style.display = "none";
            document.getElementById("focusPic3nav").style.display = "none";
            document.getElementById("focusPic4nav").style.display = "none";



            break;
        case 2:
            document.getElementById("u1").style.color = "#0051A2";
            document.getElementById("u2").style.color = "red";
            //document.getElementById("u3").style.color = "#0051A2";
            document.getElementById("u4").style.color = "#0051A2";
            document.getElementById("focusPic1").style.display = "none";
            document.getElementById("focusPic2").style.display = "block";
            document.getElementById("focusPic3").style.display = "none";
            document.getElementById("focusPic4").style.display = "none";
            document.getElementById("focusPic1nav").style.display = "none";
            document.getElementById("focusPic2nav").style.display = "block";
            document.getElementById("focusPic3nav").style.display = "none";
            document.getElementById("focusPic4nav").style.display = "none";
            break;
        case 3:
            document.getElementById("u1").style.color = "#0051A2";
            document.getElementById("u2").style.color = "#0051A2";
            //document.getElementById("u3").style.color = "red";
            document.getElementById("u4").style.color = "#0051A2";
            document.getElementById("focusPic1").style.display = "none";
            document.getElementById("focusPic2").style.display = "none";
            document.getElementById("focusPic3").style.display = "block";
            document.getElementById("focusPic4").style.display = "none";
            document.getElementById("focusPic1nav").style.display = "none";
            document.getElementById("focusPic2nav").style.display = "none";
            document.getElementById("focusPic3nav").style.display = "block";
            document.getElementById("focusPic4nav").style.display = "none";
            break;
        case 4:
            document.getElementById("u1").style.color = "#0051A2";
            document.getElementById("u2").style.color = "#0051A2";
            //document.getElementById("u3").style.color = "#0051A2";
            document.getElementById("u4").style.color = "red";
            document.getElementById("focusPic1").style.display = "none";
            document.getElementById("focusPic2").style.display = "none";
            document.getElementById("focusPic3").style.display = "none";
            document.getElementById("focusPic4").style.display = "block";
            document.getElementById("focusPic1nav").style.display = "none";
            document.getElementById("focusPic2nav").style.display = "none";
            document.getElementById("focusPic3nav").style.display = "none";
            document.getElementById("focusPic4nav").style.display = "block";
            break;
    }
}

//-----------------------------------