OnTab = function(obj, id, id1, obj1) {
    var ary = obj.src.split('/');
    var Img = ary[ary.length - 1]
    if (Img == "Index_36.gif") {
        obj.src = "images/Index_36_01.gif";
        document.getElementById(obj1).src = "images/Index_37.gif";
        document.getElementById(id).style.display = "";
        document.getElementById(id1).style.display = "none";
    }
    if (Img == "Index_37.gif") {
        obj.src = "images/Index_37_01.gif";
        document.getElementById(obj1).src = "images/Index_36.gif";
        document.getElementById(id).style.display = "";
        document.getElementById(id1).style.display = "none";
    }
    if (Img == "Index_41.gif") {
        obj.src = "images/Index_41_01.gif";
        document.getElementById(obj1).src = "images/Index_42.gif";
        document.getElementById(id).style.display = "";
        document.getElementById(id1).style.display = "none";
    }
    if (Img == "Index_42.gif") {
        obj.src = "images/Index_42_01.gif";
        document.getElementById(obj1).src = "images/Index_41.gif";
        document.getElementById(id).style.display = "";
        document.getElementById(id1).style.display = "none";
    }
}