//Btn
/*
 Btn Class v1.1
 update 2007.12.10
 create K.Kubonaka 
*/

function Btn(elm) {
	var me = this;
	this.elm = elm;
	this.over = function() { me.changeImage(true); };
	this.out = function() {	me.changeImage(false); };
	this.init();
}

var _Btn = Btn.prototype;

_Btn.init = function() {
	var me = this;
	var img_on = new Image();
	var img_str = this.elm.getAttribute("src");
	img_on.src = img_str.replace("_off", "_on");
	this.setEvent();
};


_Btn.doSelect = function() {
	this.deleteEvent();
	this.changeImage(true);
};


_Btn.setEvent = function() {
	try {
		this.elm.addEventListener("mouseover", this.over, false);
		this.elm.addEventListener("mouseout", this.out, false);
	} catch(e) {
		this.elm.attachEvent("onmouseover", this.over);
		this.elm.attachEvent("onmouseout", this.out);
	}
};


_Btn.deleteEvent = function() {
	try {
		this.elm.removeEventListener("mouseover", this.over, false);
		this.elm.removeEventListener("mouseout", this.out, false);
	} catch(e) {
		this.elm.detachEvent("onmouseover", this.over);
		this.elm.detachEvent("onmouseout", this.out);
	}
};


_Btn.changeImage = function(flag) {
	var img = this.elm.getAttribute("src");
	this.elm.setAttribute("src", (flag) ? img.replace("_off", "_on") : img.replace("_on", "_off"));
};






//roSetting
(function(func) {
	try {
		window.addEventListener("load", func, false);
	} catch(e) {
		window.attachEvent("onload", func);
	}
})(function() {
	var btnArray = document.getElementsByTagName("img");
	for (var i = 0, ln = btnArray.length; i < ln; i++) {
		if (btnArray[i].getAttribute("src").indexOf("_off.") >= 0) new Btn(btnArray[i]);
	}
});





//MM ACTION
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}