// tompo (unit: millisecond) 
var speed = 7000;
//
	
function $(id) { 
    return document.getElementById(id);
}
function moveElement(elementID, final_x, final_y, interval) {
    if (!document.getElementById) return false;
    if (!document.getElementById(elementID)) return false;
    var elem = document.getElementById(elementID);
    if (elem.movement) {
        clearTimeout(elem.movement);
    }
    if (!elem.style.left) {
        elem.style.left = "0px";
    }
    if (!elem.style.top) {
        elem.style.top = "0px";
    }
    var xpos = parseInt(elem.style.left);
    var ypos = parseInt(elem.style.top);
    if (xpos == final_x && ypos == final_y) {
        return true;
    }
    if (xpos < final_x) {
        var dist = Math.ceil((final_x - xpos)/10);
        xpos = xpos + dist;
    } else if (xpos > final_x) {
        dist = Math.ceil((xpos - final_x)/10);
        xpos = xpos - dist;
    }
    if (ypos < final_y) {
        dist = Math.ceil((final_y - ypos)/10);
        ypos = ypos + dist;
    }
    if (ypos > final_y) {
        dist = Math.ceil((ypos - final_y)/10);
        ypos = ypos - dist;
    }
    elem.style.left = xpos + "px";
    elem.style.top = ypos + "px";
    var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
    elem.movement = setTimeout(repeat,interval);
}
function classNormal(){
    var focusBtnList = $('focus_change_btn').getElementsByTagName('li');
    for(var i=0; i<focusBtnList.length; i++) {
        focusBtnList[i].className='';
    }
}
function focusChange() {
    var focusBtnList = $('focus_change_btn').getElementsByTagName('li');
    focusBtnList[0].onmouseover = function() {
        moveElement('focus_change_list',0,0,5);
        classNormal()
        focusBtnList[0].className='current'
    }
    focusBtnList[1].onmouseover = function() {
        moveElement('focus_change_list',-760,0,5);
        classNormal()
        focusBtnList[1].className='current'
    }
    focusBtnList[2].onmouseover = function() {
        moveElement('focus_change_list',-1520,0,5);
        classNormal()
        focusBtnList[2].className='current'
    }
    focusBtnList[3].onmouseover = function() {
        moveElement('focus_change_list',-2280,0,5);
        classNormal()
        focusBtnList[3].className='current'
    }
}
setInterval('autoFocusChange()', speed);
var atuokey = false;
function autoFocusChange() {
    $('focus_change').onmouseover = function(){
        atuokey = true
        }
    $('focus_change').onmouseout = function(){
        atuokey = false
        }
    if(atuokey) return;
    var focusBtnList = $('focus_change_btn').getElementsByTagName('li');
    for(var i=0; i<focusBtnList.length; i++) {
        if (focusBtnList[i].className == 'current') {
            var currentNum = i;
        }
    }
    if (currentNum==0 ){
        moveElement('focus_change_list',-760,0,5);
        classNormal()
        focusBtnList[1].className='current'
    }
    if (currentNum==1 ){
        moveElement('focus_change_list',-1520,0,5);
        classNormal()
        focusBtnList[2].className='current'
    }
    if (currentNum==2 ){
        moveElement('focus_change_list',-2280,0,5);
        classNormal()
        focusBtnList[3].className='current'
    }
    if (currentNum==3 ){
        moveElement('focus_change_list',0,0,5);
        classNormal()
        focusBtnList[0].className='current'
    }
}
window.onload=function(){
    focusChange();
}