//ͼƬ¹ö¶¯
var menuCount = 6;
var menuIndex = 0;
var menuWidth = 154;
var moveInternal = 0;
var step = 5;

function MoveTopMenu(direction) {
    clearInterval(moveInternal);
    if (direction == "right") {
        if (menuIndex + 1 < menuCount) {
            menuIndex++;
            moveInternal = window.setInterval("ScrollRightTopMenu();", 20);
        }
    } else if (direction == "left") {
        if (menuIndex - 1 >= 0) {
            menuIndex--
            moveInternal = window.setInterval("ScrollLeftTopMenu();", 20);
        }
    }
}
function ScrollRightTopMenu() {
    var left = parseInt(document.getElementById("topMenu").style.left);
    if (left > -1000 && left > menuIndex * -menuWidth) {
        left -= step;
        document.getElementById("topMenu").style.left = left + "px";
        //document.getElementById("topMenuLeft").src = "http://www.gold4power.com/templates/images/menuleft.gif";
    }else {
        clearInterval(moveInternal);
        if (left == -1000) {
            //document.getElementById("topMenuRight").src = "http://www.gold4power.com/templates/images/menuright_.gif";
        }
    }
}
function ScrollLeftTopMenu() {
    var left = parseInt(document.getElementById("topMenu").style.left);
    if (left < 0 && left < menuIndex * -menuWidth) {
        left += step;
        document.getElementById("topMenu").style.left = left + "px";
        //document.getElementById("topMenuRight").src = "http://www.gold4power.com/templates/images/menuright.gif";
    } else {
        clearInterval(moveInternal);
        if (left == 0) {
            //document.getElementById("topMenuLeft").src = "http://www.gold4power.com/templates/images/menuleft_.gif";
        }
    }
}