function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");
		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}
if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}


var eventTimer;    // タイマー変数
var restScroll=0;    // スクロール残量

function Scroll(base,move){
    // 移動元(base)要素＆オブジェクトを取得
    var obj_base = getElemPosition(base);
    // 移動先(move)要素＆オブジェクトを取得
    var elem_move = document.getElementById(move);
    var obj_move = getElemPosition(elem_move);
    restScroll = obj_move.y-obj_base.y;
    eventTimer = setInterval(setScrollPosition,10);
}

// スクロール処理をする
function setScrollPosition() {
    var moveValue=0;
    // スクロール残量が80以上の場合、スクロール量を変える
    // Math.abs()では値の絶対値を取得
    if(Math.abs(restScroll)>80){
        moveValue = (restScroll>0)?20:-20;
    }else{
        moveValue = Math.round(restScroll/4);
    }
    // スクロールを処理
    parent.scrollBy(0,moveValue);
    // スクロール残量を計算して、残りが無ければタイマー解除
    restScroll = (restScroll>0)?restScroll-moveValue:restScroll-moveValue;
    if(moveValue==0){
        clearInterval(eventTimer);
        restScroll=0;
    }
}

// 要素の位置を取得し、オブジェクトとして返す
function getElemPosition(elem) {
    var obj = new Object();
    obj.x = elem.offsetLeft;
    obj.y = elem.offsetTop;
    // 親要素を取得して位置情報を修正する
    while(elem.offsetParent) {
        elem = elem.offsetParent;
        obj.x += elem.offsetLeft;
        obj.y += elem.offsetTop;
    }
    return obj;
}


/******* Enterキーによる誤送信防止 ************/
                  
function handleEnter (field, event) {  
        var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;  
        if (keyCode == 13) {  
            var i;  
            for (i = 0; i < field.form.elements.length; i++)  
                if (field == field.form.elements[i])  
                    break;  
            i = (i + 1) % field.form.elements.length;  
            field.form.elements[i].focus();  
            return false;  
        }   
        else  
          return true;  
}


/******* ドロップダウン ************/
var DDSPEED = 10;
var DDTIMER = 15;

// main function to handle the mouse events //
function ddMenu(id,d){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.display = 'block';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

// collapse the menu //
function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,d){
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = (Math.round((c.maxh - currh) / DDSPEED));
  }else{
    dist = (Math.round(currh / DDSPEED));
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
    clearInterval(c.timer);
  }
}