//---------------TO_TOP

isIE = document.all;            // ブラウザ(IE)のチェック用
isN6 = document.getElementById; // ブラウザ(N6)のチェック用
isN4 = document.layers;         // ブラウザ(N4)のチェック用
myObj = "";                     // ブラウザオブジェクト退避用

//	var Mac = navigator.appVersion.indexOf('Mac',0) != -1;
//	var Win = navigator.appVersion.indexOf('Win',0) != -1;
//	var IE  = navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1;
//	var NN  = navigator.appName.indexOf("Netscape",0) != -1;
//	var Moz = navigator.userAgent.indexOf("Gecko") != -1;
//	var Vmajor = parseInt(navigator.appVersion); // ex. 3
//	var Vminor = parseFloat(navigator.appVersion); // ex. 3.01

//	var MacIE4 = ((Mac && navigator.appVersion.indexOf('MSIE 4.',0) != -1));
//	var MacIE3 = ((Mac && navigator.appVersion.indexOf('MSIE 3.',0) != -1));

function CurrLeft() {
	if (isIE) {
		if(document.compatMode){
			return document.documentElement.scrollLeft;
		}else{
			return document.body.scrollLeft;
		}
	} else if (window.pageXOffset) {
		return window.pageXOffset;
	} else {
		return 0;
	}
}

function CurrTop() {
	if (isIE) {
		if(document.compatMode=="CSS1Compat"){
			return document.documentElement.scrollTop;
		}else{
			return document.body.scrollTop;
		}
	} else if (window.pageYOffset) {
		return window.pageYOffset;
	} else {
		return 0;
	}
}


var TimerOfScrollPage;
var currX;
var currY;
var unittime = 2;

function ScrollPage(toX, toY, breaking) {
	if (TimerOfScrollPage) clearTimeout(TimerOfScrollPage);

	if (!toX || toX < 0)	{toX = 0;}
	if (!toY || toY < 0)	{toY = 0;}
	if (!currX)	{currX = CurrLeft();}
	if (!currY)	{currY = CurrTop();}
	if (!breaking)	{breaking = 5;}

//	alert("stop " + toX + "," + toY + "," + currX + "," + currY);

	currX += (toX - CurrLeft()) / breaking;
	if (currX < 0) {currX = 0;}
	currY += (toY - CurrTop()) / breaking;
	if (currY < 0) {currY = 0;}

//	alert("stop " + currX + "," + currY);


	currX = Math.floor(currX);
	currY = Math.floor(currY);
	window.scrollTo(currX, currY);

//	alert("stop " + currX + "," + currY );

	if (currX != toX || currY != toY) {

//		alert("set timer " + toX + "," + toY + "," + breaking);

		TimerOfScrollPage = setTimeout("ScrollPage(" + toX + "," + toY + "," + breaking + ")", unittime);
	}
}

function backToTop() {
	ScrollPage(0, 0, 6);
}



//---------------IE PNG

function correctPNG(){

  if(browserType.IE5 || browserType.IE6){

    for(var i=0; i<document.images.length; i++){
      var img = document.images[i]
      var imgName = img.src.toUpperCase()
	
      if (imgName.substring(imgName.length-3, imgName.length) == "PNG"){
        var imgID = (img.id) ? "id='" + img.id + "' " : ""
        var imgClass = (img.className) ? "class='" + img.className + "' " : ""
        var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
        var imgStyle = "display:inline-block;" + img.style.cssText 
	  
        if (img.align == "left") imgStyle = "float:left;" + imgStyle
        if (img.align == "right") imgStyle = "float:right;" + imgStyle
        if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle		
        var strNewHTML = "<span " + imgID + imgClass + imgTitle
        + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
        + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
        + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
        img.outerHTML = strNewHTML
        i = i-1
      }
    }
  }
}


//---------------Rollover

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);
}





//---------------fontChange

function large(){
	page.style.fontSize="120%";}
function normal(){
	page.style.fontSize="1.0em";}
function small(){
	page.style.fontSize="0.8em";}